Photo credits

Every photo was checked by eye as the species named before it was published; we leave an animal without a photo rather than show one we could not confirm. Photos come from iNaturalist (1,680) and Wikimedia Commons (503), including U.S. federal agency works in the public domain. We use public domain, CC0, CC BY and CC BY-SA licences only:

• CC BY 4.01,291
• CC0 1.0341
• CC BY-SA 4.0271
• CC BY 2.0124
• Public domain92
• CC022
• CC BY-SA 3.020
• CC BY-SA 2.017
• CC BY 3.03
• CC BY-SA 2.5 ca1
• CC BY 3.0 us1

We resize photos and convert them to modern image formats. For CC BY-SA photos, our resized copies are shared under the same licence. Photo authors can ask for a credit to be corrected or a photo removed at [email protected].

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• "A Moth" Agnorisma bollii Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist

A

• A Jumping Spider Phidippus apacheanus David Hill · CC BY 2.0 · Wikimedia Commons
• Abert's Squirrel Sciurus aberti Mike Ostrowski · CC BY-SA 4.0 · iNaturalist
• Abert's Towhee Melozone aberti Adam Leisenring · CC BY 4.0 · iNaturalist
• Acorn Woodpecker Melanerpes formicivorus Dario Taraborelli · CC0 1.0 · iNaturalist
• Acorn Woodpecker Melanerpes formicivorus formicivorus Joshua Smith · CC0 1.0 · iNaturalist
• Africanized honey bee Apis mellifera scutellata SAplants · CC BY-SA 4.0 · Wikimedia Commons
• Africanized Honey Bee Apis melliferaHoney bee (Apis mellifera) on crocus, showing striped abdomen and pollen-dusted hair Corey Farwell · CC BY 4.0 · iNaturalist
• Africanized Honey Bee Apis melliferaHoney bee (Apis mellifera) drone with large eyes meeting on top of head Ian · CC0 1.0 · iNaturalist
• Africanized Honey Bee Apis melliferaHoney bee (Apis mellifera) worker feeding on small white flowers Jesse Rorabaugh · CC0 1.0 · iNaturalist
• Africanized Honey Bee Apis melliferaHoney bee (Apis mellifera) swarm clustered in shrubs Kieran Hanrahan · CC BY 4.0 · iNaturalist
• Agassiz’s Desert Tortoise Gopherus agassiziiTwo adults face off in open Mojave Desert scrub. nmoorhatch · CC BY 4.0 · iNaturalist
• Agassiz’s Desert Tortoise Gopherus agassiziiAdult crossing a desert road in the Mojave, showing growth rings on its domed shell. Wendy St. John · CC BY-SA 4.0 · iNaturalist
• Agelenopsis apertaDesert grass spider (Agelenopsis aperta) inside the funnel of its sheet web Bobby McCabe · CC BY 4.0 · iNaturalist
• Agelenopsis apertaDesert grass spider (Agelenopsis aperta) close-up: two dark head stripes, banded legs Juan Cruzado Cortés · CC BY-SA 4.0 · Wikimedia Commons
• Agelenopsis naeviaDark-legged grass spider (Agelenopsis naevia) on its sheet web spread across a leaf Curtis Burke · CC BY 4.0 · iNaturalist
• Agelenopsis naeviaFemale dark-legged grass spider (Agelenopsis naevia) on a silk pad on a sweetgum leaf Kathy Richardson · CC BY 4.0 · iNaturalist
• Agelenopsis naeviaDark-legged grass spider (Agelenopsis naevia) showing striped carapace and long spinnerets Tdot778 · CC BY-SA 3.0 · Wikimedia Commons
• Agrarian Sac Spider Cheiracanthium inclusumAgrarian sac spider (Cheiracanthium inclusum) on a leaf, pale body and long legs Evelyn Lazzaretti 🏳️‍⚧️ · CC0 1.0 · iNaturalist
• Agrarian Sac Spider Cheiracanthium inclusumYoung agrarian sac spider (Cheiracanthium inclusum): abdominal stripe, dark eyes and leg tips Justin Williams · CC BY 4.0 · iNaturalist
• Agrarian Sac Spider Cheiracanthium inclusumAgrarian sac spider (Cheiracanthium inclusum) hunting on leaves at night Samantha Knight · CC BY 4.0 · iNaturalist
• Agrarian Sac Spider Cheiracanthium inclusumAgrarian sac spider (Cheiracanthium inclusum) with prey on mesh fabric at night Shinobu · CC BY 4.0 · iNaturalist
• Alatina alataAlatina alata swimming in open water, four tentacles trailing from the bell corners Robin White · CC BY 4.0 · iNaturalist
• Alatina alataAlatina alata side view showing the box-shaped transparent bell Robin White · CC BY 4.0 · iNaturalist
• Alatina alataAlatina alata swimming with long tentacles curving behind it Robin White · CC BY 4.0 · iNaturalist
• Alfalfa weevil Hypera postica sentraevant · CC0 1.0 · iNaturalist
• Allen's Big-eared Bat Idionycteris phyllotis Juan Cruzado Cortés · CC BY-SA 4.0 · Wikimedia Commons
• Alligator Snapping Turtle Macrochelys temminckiiAdult at a path edge: huge head, hooked beak and spiked shell ridges Eric Schmidt · CC BY 4.0 · iNaturalist
• Altamira Oriole Icterus gularis natgrace18 · CC0 1.0 · iNaturalist
• Amazon Kingfisher Chloroceryle amazona Giles Laurent · CC BY-SA 4.0 · Wikimedia Commons
• American alligator Alligator mississippiensisHead floating at the surface: wide snout, raised eyes and nostrils Forest Botial-Jarvis · CC BY 4.0 · iNaturalist
• American alligator Alligator mississippiensisAdult basking on a reed bank above a lily-pad marsh Hillebrand Steve, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons
• American alligator Alligator mississippiensisAdult at the water's edge showing its broad, rounded snout KimonBerlin · CC BY-SA 2.0 · Wikimedia Commons
• American alligator Alligator mississippiensisYoung alligators with yellow cross-bands resting on an adult Vijay Barve · CC0 1.0 · iNaturalist
• American alligator Alligator mississippiensisBanded juvenile riding on an adult's head in the water Zygy · CC0 1.0 · iNaturalist
• American Avocet Recurvirostra americana John Hibbard · CC BY 4.0 · iNaturalist
• American Badger Taxidea taxus avocat · CC BY 4.0 · iNaturalist
• American Barn Owl Tyto furcata Brooke J · CC BY 4.0 · iNaturalist
• American Barn Owl Tyto alba T meltzer · CC BY-SA 4.0 · Wikimedia Commons
• American Beaver Castor canadensis GrandTetonNPS · Public domain · Wikimedia Commons
• American Black Bear Ursus americanusBrown-phase black bear resting in a tree Jared Shorma · CC BY 4.0 · iNaturalist
• American Black Bear Ursus americanusYoung bear eating plants in tall grass, brown muzzle visible Joshua Liverman · CC BY 4.0 · iNaturalist
• American Black Bear Ursus americanusBlack bear looking back in a Florida pine flatwoods with palmetto Tom Kennedy · CC BY 4.0 · iNaturalist
• American Black Bear Ursus americanusBlack bear in a meadow, side view with straight face and brown muzzle U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons
• American Black Bear Ursus americanusAdult male sitting up at a forest edge, showing rounded ears William J. Deml · CC BY 4.0 · iNaturalist
• American Black Duck Anas rubripes Mark Apgar · CC BY 4.0 · iNaturalist
• American Bullfrog Lithobates catesbeianusSpotted adult resting on a lily pad Kelsey Low · CC BY 4.0 · iNaturalist
• American Bullfrog Lithobates catesbeianusAdult male in water; eardrum much larger than the eye Michael J. Papay · CC BY 4.0 · iNaturalist
• American Bullfrog Lithobates catesbeianusAdult at the water's edge, showing large round eardrum and no back ridges Paul Danese · CC BY-SA 4.0 · Wikimedia Commons
• American Bullfrog Lithobates catesbeianusYoung frog transforming from a tadpole, tail still attached Sam Kieschnick · CC BY 4.0 · iNaturalist
• American Bullfrog Lithobates catesbeianusAdult female on a log in duckweed; eardrum about eye-sized William J. Deml · CC BY 4.0 · iNaturalist
• American Coot Fulica americana Jonathan Eisen · CC BY 4.0 · iNaturalist
• American Coot Fulica americana americana Robert Harris · CC BY 4.0 · iNaturalist
• American crocodile Crocodylus acutusAdult resting on a grassy bank beside the water Ben Machado · CC BY 4.0 · iNaturalist
• American crocodile Crocodylus acutusAdult gaping in dark mangrove water Dean Hester · CC BY 4.0 · iNaturalist
• American crocodile Crocodylus acutusAdult basking: light gray-green body, narrow tapering snout, teeth showing Dennis Vollmar · CC BY 4.0 · iNaturalist
• American crocodile Crocodylus acutusAdult on a muddy bank, front view with mouth open evergladesnps · Public domain · Wikimedia Commons
• American crocodile Crocodylus acutusHead in profile: tapered snout with lower teeth visible, mouth closed Judd Patterson, National Park Service biologist · Public domain · Wikimedia Commons
• American Dipper Cinclus mexicanus Dario Taraborelli · CC0 1.0 · iNaturalist
• American Dipper Cinclus mexicanus unicolor Jonathan Layman · CC BY 4.0 · iNaturalist
• American Dog Tick Dermacentor variabilis Turner Brockman · CC BY-SA 4.0 · iNaturalist
• American Flamingo Phoenicopterus ruber tcantrell52 · CC BY 4.0 · iNaturalist
• American Goldfinch Spinus tristis pallidus Kevin Achtmeyer · CC0 1.0 · iNaturalist
• American Goshawk Astur atricapillus Laurel Meredyk · CC BY 4.0 · iNaturalist
• American Goshawk Accipiter atricapillus Laurel Meredyk · CC BY 4.0 · iNaturalist
• American house spider Parasteatoda tepidariorum Erin Lalime · CC BY 4.0 · iNaturalist
• American Kestrel Falco sparverius sparverius Dan Vickers · CC BY 4.0 · iNaturalist
• American Kestrel Falco sparverius Jonathan Eisen · CC BY 4.0 · iNaturalist
• American Kestrel [Southeastern race] Falco sparverius paulus James Rogers · CC BY 4.0 · iNaturalist
• American Marten Martes americana Connor Haindfield · CC BY 4.0 · iNaturalist
• American Mink Mustela vison Richard Littauer · CC BY 4.0 · iNaturalist
• American Oystercatcher Haematopus palliatus Mila C · CC BY 4.0 · iNaturalist
• American perimyotis Perimyotis subflavus Felix Zareie-Vaux · CC0 1.0 · iNaturalist
• American Pika Ochotona princeps incana Jared Shorma · CC BY 4.0 · iNaturalist
• American Pika Ochotona princeps Parker James Lloyd · CC BY 4.0 · iNaturalist
• American Pipit Anthus rubescens Adam Jackson · CC0 1.0 · iNaturalist
• American Redstart Setophaga ruticilla Adam Jackson · CC0 1.0 · iNaturalist
• American Robin Turdus migratorius Kathy Richardson · CC BY 4.0 · iNaturalist
• American Three-toed Woodpecker Picoides dorsalis Matt Bowser · CC BY 4.0 · iNaturalist
• American Toad Anaxyrus americanusAmerican toad on a wet stream rock, showing its pale back stripe. Deaglan McManus · CC0 1.0 · iNaturalist
• American Toad Anaxyrus americanusAmerican toad: dark spots with one or two warts and enlarged reddish leg warts. U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons
• American Toad Anaxyrus americanus User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• American Tree Sparrow Spizelloides arborea Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• American White Pelican Pelecanus erythrorhynchos Daughter Dad · CC BY 4.0 · iNaturalist
• American Wigeon Mareca americana Andy Wilson · CC0 1.0 · iNaturalist
• American Woodcock Scolopax minor Jason Hill · CC BY 4.0 · iNaturalist
• Amethyst-throated Mountain-gem Lampornis amethystinus Adam Jackson · CC0 · Wikimedia Commons
• An Antmimic Spider Castianeira amoena Turner Brockman · CC BY-SA 4.0 · iNaturalist
• Ancient Murrelet Synthliboramphus antiquus nickajacket · CC0 1.0 · iNaturalist
• Anna's Hummingbird Calypte anna Dario Taraborelli · CC0 1.0 · iNaturalist
• Antillean fruit bat Artibeus jamaicensis Gériss07 · CC BY-SA 4.0 · Wikimedia Commons
• Antmimic spider Castianeira occidens Toby · CC BY 4.0 · iNaturalist
• Apache Violin Spider Loxosceles arizonica bg1159 · CC BY 4.0 · iNaturalist
• Apheloria virginiensisFlat-backed millipede (Apheloria virginiensis) showing flattened body with bright edges Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Apheloria virginiensisBlack-and-gold flat millipede (Apheloria virginiensis) in a pink-and-black colour form Laura Mae · CC BY 4.0 · iNaturalist
• Aphonopelma eutylenumCalifornia ebony tarantula (Aphonopelma eutylenum), nearly black, among leaf litter Mark Valen · CC BY 4.0 · iNaturalist
• Aphonopelma iodiusDesert tarantula (Aphonopelma iodius) on dry grass, facing the camera Cjziems · CC BY 4.0 · Wikimedia Commons
• Aplomado Falcon Falco femoralis datadan · CC BY 4.0 · iNaturalist
• Aquatic Gartersnake Thamnophis atratus Alex Heyman · CC0 1.0 · iNaturalist
• Arabesque Orbweaver Neoscona arabesca Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Arctic Fox Vulpes lagopus pribilofensis Emily Turteltaub Nelson · CC BY 4.0 · iNaturalist
• Arctic Peregrine Falcon Falco peregrinus tundrius Dan Vickers · CC BY 4.0 · iNaturalist
• Arctic Tern Sterna paradisaea Tomás Tamagno · CC BY 4.0 · iNaturalist
• Ardea herodias occidentalisGreat white heron, the all-white Florida form, wading in surf Josiah Londerée · CC BY 4.0 · iNaturalist
• Argentine ant Linepithema humile Jesse Rorabaugh · CC0 1.0 · iNaturalist
• Argentine Black and White Tegu Salvator merianaeWild tegu in Miami-Dade County flicking its forked tongue. Andrew Durso · CC BY 4.0 · iNaturalist
• Argentine Black and White Tegu Salvator merianaeTegu raising its head in a Florida lawn, showing black-and-white jaw bands. Dennis Vollmar · CC BY 4.0 · iNaturalist
• Argentine Black and White Tegu Salvator merianaeSide view of the thick head and neck and black-and-white banding. Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Argentine Black and White Tegu Salvator merianae Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Arid Land Ribbonsnake Thamnophis proximus diabolicus Tom Kennedy · CC BY 4.0 · iNaturalist
• Arizona bark scorpion Centruroides sculpturatusArizona bark scorpion (Centruroides sculpturatus) on rock, showing slender pincers and tail Andrew Meeds · CC BY 4.0 · iNaturalist
• Arizona bark scorpion Centruroides sculpturatusArizona bark scorpion (Centruroides sculpturatus) glowing under UV light (blacklight) Therringshaw · CC BY 4.0 · Wikimedia Commons
• Arizona Black Rattlesnake Crotalus cerberus tzeducation · CC BY 4.0 · iNaturalist
• Arizona Cotton Rat Sigmodon arizonae Rachel Stringham · CC BY 4.0 · iNaturalist
• Arizona Gray Squirrel Sciurus arizonensis Wendy McCrady · CC BY 4.0 · iNaturalist
• Arizona Hairy Scorpion Hadrurus arizonensis Andy Kleinhesselink · CC0 1.0 · iNaturalist
• Arizona Hairy Scorpion Hadrurus arizonensisDesert hairy scorpion at night: thick pincers and a stout, bristly tail. Bob Miller · CC BY 4.0 · iNaturalist
• Arizona Hairy Scorpion Hadrurus arizonensisClose-up of the bristly, thick tail and stinger. Bob Miller · CC BY 4.0 · iNaturalist
• Arizona Hairy Scorpion Hadrurus arizonensisAdult female desert hairy scorpion: dark back, pale yellow legs and pincers. Katrina Smith · CC BY 4.0 · iNaturalist
• Arizona stripe-tailed scorpion Paravaejovis spinigerus Acrocynus · CC BY-SA 3.0 · Wikimedia Commons
• Arizona Striped Whiptail Aspidoscelis arizonae Mike Duran · CC BY 4.0 · iNaturalist
• Arizona Treefrog Dryophytes wrightorum Michael Tidwell · CC BY 4.0 · iNaturalist
• Arizona Woodpecker Leuconotopicus arizonae Laura Gaudette · CC BY 4.0 · iNaturalist
• Arizona Zebratail Lizard Callisaurus draconoides ventralis CK2AZ · CC BY 4.0 · iNaturalist
• Armadillo Dasypus novemcinctusArmadillo on sand, showing banded shell, long ears and pig-like snout MartinKlippel · CC BY-SA 4.0 · Wikimedia Commons
• Armadillo Dasypus novemcinctusArmadillo sitting up in sandy scrub, foraging MartinKlippel · CC BY-SA 4.0 · Wikimedia Commons
• Arogos Skipper Atrytone arogos Arlo Sitimans · CC BY 4.0 · iNaturalist
• Arrow-shaped Micrathena Micrathena sagittata Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Arroyo Toad Anaxyrus californicus Adam J. Searcy · CC BY 4.0 · iNaturalist
• Ash-throated Flycatcher Myiarchus cinerascens Matt Felperin · CC BY 4.0 · iNaturalist
• Asian Bush Mosquito Aedes japonicus Chris Baer · CC BY 4.0 · iNaturalist
• Asian giant hornet (now officially northern giant hornet) Vespa mandariniaNorthern giant hornet at a beehive entrance, with honey bees flying nearby WATANABE Hitoshi 渡辺仁 · CC BY 4.0 · iNaturalist
• Asian Lady Beetle Harmonia axyridisMustard-orange form with many small black spots. Buckelkopfcichlide · CC BY 4.0 · iNaturalist
• Asian Lady Beetle Harmonia axyridisClose-up of the white pronotum with its black M-shaped mark. Claus Giloi · CC BY 4.0 · iNaturalist
• Asian Lady Beetle Harmonia axyridisRed adult with scattered black spots and a black M mark behind the head. Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Asian shore crab Hemigrapsus sanguineus Alie / C.A. Kratzer · CC BY-SA 4.0 · iNaturalist
• Aspidoscelis xanthonotusRed-backed whiptail: burgundy back with bright orange on the lower back. Cole Wolf · CC BY 4.0 · iNaturalist
• Atlantic Blacktip Carcharhinus limbatusBlacktip shark seen from above, showing black-tipped pectoral fins and pointed snout John G. Phillips · CC BY 4.0 · iNaturalist
• Atlantic Leatherback Dermochelys coriaceaHatchling on sand, with white-lined ridges and long front flippers Pam Kleinsasser · CC BY 4.0 · iNaturalist
• Atlantic Leatherback Dermochelys coriaceaAdult on a nesting beach: ridged leathery shell, pink head spot, long front flipper Rabon David, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons
• Atlantic Leatherback Dermochelys coriaceaFront view on a beach: leathery ridged shell, spotted skin, pinkish underside Rabon David, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons
• Atlantic Leatherback Dermochelys coriaceaAdult surfacing at sea, showing the spotted head and throat RJ Baltierra · CC BY 4.0 · iNaturalist
• Atlantic Puffin Fratercula arctica Kevin Achtmeyer · CC0 1.0 · iNaturalist
• Atlantic Spotted Dolphin Stenella frontalis João D'Andretta · CC BY-SA 4.0 · Wikimedia Commons
• Atlantic White-sided Dolphin Lagenorhynchus acutus Dean Hester · CC BY 4.0 · iNaturalist
• Audubon's Oriole Icterus graduacauda datadan · CC BY 4.0 · iNaturalist
• Audubon's Shearwater Puffinus lherminieri Dan Vickers · CC BY 4.0 · iNaturalist
• Australian Spotted Jellyfish Phyllorhiza punctata Millie Basden · CC BY 4.0 · iNaturalist
• Axis Deer Axis axis Cody Stricker · CC BY 4.0 · iNaturalist
• Aztec Thrush Ridgwayia pinicola Dominic Sherony · CC BY-SA 2.0 · Wikimedia Commons

B

• Bachman's Fox Squirrel Sciurus niger bachmani Kim · CC BY 4.0 · iNaturalist
• Bachman's Sparrow Peucaea aestivalis novvictan · CC BY 4.0 · iNaturalist
• Bahama Mockingbird Robert Webster · CC BY-SA 4.0 · iNaturalist
• Baikal Teal Sibirionetta formosa Sun Jiao (Interaccoonale) · CC BY 4.0 · Wikimedia Commons
• Baird's Ratsnake Pantherophis bairdi panza-rayada · CC BY-SA 3.0 · Wikimedia Commons
• Baird's Sandpiper Calidris bairdii Dan Vickers · CC BY 4.0 · iNaturalist
• Baird's Sparrow Centronyx bairdii Mike Ostrowski · CC BY-SA 4.0 · iNaturalist
• Baja California Brush Lizard Urosaurus nigricauda RJ Baltierra · CC BY 4.0 · iNaturalist
• Baja California Coachwhip Coluber fuliginosus kclarksdnhmorg · CC BY 4.0 · iNaturalist
• Baja California Collared Lizard Crotaphytus vestigium Matt D'Agrosa · CC BY 4.0 · iNaturalist
• Bald Eagle Haliaeetus leucocephalusJuvenile, mottled brown and white with dark bill, swooping low over water Daughter Dad · CC BY 4.0 · iNaturalist
• Bald Eagle Haliaeetus leucocephalusAdult head close-up showing white head, yellow eye and yellow bill Justin Flint · CC BY 4.0 · iNaturalist
• Bald Eagle Haliaeetus leucocephalusAdult in flight carrying a fish, wings broad and flat, white tail Matt Felperin · CC BY 4.0 · iNaturalist
• Bald Eagle Haliaeetus leucocephalusAdult perched in a pine tree sudomir · CC BY 4.0 · iNaturalist
• Bald Eagle Haliaeetus leucocephalusAdult perched on a snag: white head, dark brown body, yellow bill and feet U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons
• Bald-faced Hornet Dolichovespula maculataFront view showing the white face that gives the hornet its name Amy Schnebelin · CC BY 4.0 · iNaturalist
• Bald-faced Hornet Dolichovespula maculataHornet visiting a white aster flower Bernie Paquette · CC BY 4.0 · iNaturalist
• Bald-faced Hornet Dolichovespula maculataMale on a willow branch, showing white bands near the abdomen tip Daniel S · CC BY 4.0 · iNaturalist
• Bald-faced Hornet Dolichovespula maculataAdult side view: black body with ivory face, thorax marks and abdomen tip Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Bald-faced Hornet Dolichovespula maculataGray paper nest hanging in a tree, entrance hole near the bottom Paul Danese · CC BY-SA 4.0 · Wikimedia Commons
• Ball Python Python regius KOUAGOU Damien · CC BY-SA 4.0 · Wikimedia Commons
• Baltimore Oriole Icterus galbula Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Bananaquit Josiah Londerée · CC BY 4.0 · iNaturalist
• Band-tailed Pigeon Patagioenas fasciata Eric Austin · CC BY 4.0 · iNaturalist
• Banded Garden Spider Argiope trifasciata Nick Chirico · CC BY 4.0 · iNaturalist
• Banded Rock Rattlesnake Crotalus lepidus klauberi Jake Nitta · CC BY 4.0 · iNaturalist
• Banded Sac Spider Castianeira longipalpa Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Banded Water Snake Nerodia fasciata fasciata Scott Loarie · CC0 1.0 · iNaturalist
• Barbary Sheep Ammotragus lervia Kevin Floyd · CC BY 4.0 · iNaturalist
• Bare-throated Tiger-Heron Tigrisoma mexicanum Adam Jackson · CC0 1.0 · iNaturalist
• Bark Anole Anolis distichus Ben Machado · CC BY 4.0 · iNaturalist
• Bark Jumping Spider Platycryptus undatus David Hill · CC BY 2.0 · Wikimedia Commons
• Barking Frog Craugastor augusti Luke Padon · CC BY 4.0 · iNaturalist
• Barking Treefrog Dryophytes gratiosus Becky Dill · CC0 1.0 · iNaturalist
• Barn Swallow Hirundo rustica erythrogaster Andy Wilson · CC0 1.0 · iNaturalist
• Barn Swallow Hirundo rustica Robbie Hannawacker · CC0 1.0 · iNaturalist
• Barnacle Goose Branta leucopsis Bill Keim · CC BY 4.0 · iNaturalist
• Barred Antshrike Thamnophilus doliatus Jose getulio de oliveira · CC BY-SA 4.0 · Wikimedia Commons
• Barred Owl Strix varia Bernie Paquette · CC BY 4.0 · iNaturalist
• Barred Tiger Salamander Ambystoma mavortium Colin Croft · CC BY 4.0 · iNaturalist
• Bat Falcon Falco rufigularis Adam Jackson · CC0 1.0 · iNaturalist
• Baur's Short-horned Lizard Phrynosoma hernandesi Bob Walker · CC BY 4.0 · iNaturalist
• Bay-breasted Warbler Setophaga castanea Adam Jackson · CC0 1.0 · iNaturalist
• Beautiful Ornamented Jumping Spider Habronattus decorus Adrienne van den Beemt · CC BY 4.0 · iNaturalist
• Beech Marten Martes foina Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Beech Scale Cryptococcus fagisuga S. Rae from Scotland, UK · CC BY 2.0 · Wikimedia Commons
• Belcher’s Gull Larus belcheri Diego Delso · CC BY-SA 4.0 · Wikimedia Commons
• Bell's Sparrow Artemisiospiza belli RJ Baltierra · CC BY 4.0 · iNaturalist
• Bell's Vireo Vireo bellii Kent P. McFarland · CC0 1.0 · iNaturalist
• Belostoma flumineumBelostoma flumineum on wet algae at the water's edge Gavin Slater · CC BY 4.0 · iNaturalist
• Belostoma flumineumBelostoma flumineum from above, a smaller oval giant water bug Ryan Hodnett · CC BY-SA 4.0 · Wikimedia Commons
• Belted Kingfisher Megaceryle alcyon Jonathan Eisen · CC BY 4.0 · iNaturalist
• Benacus griseusEastern toe-biter from above, showing claw-like front legs and oar-like hind legs Samuel Paul Galick · CC0 1.0 · iNaturalist
• Benacus griseusEastern toe-biter head-on, showing big eyes, beak and grasping front legs Samuel Paul Galick · CC0 1.0 · iNaturalist
• Bewick's Wren Thryomanes bewickii Ben · CC0 1.0 · iNaturalist
• Big Bend Patch-nosed Snake Salvadora deserticola William · CC0 1.0 · iNaturalist
• Big Bend Patchnose Snake Salvadora hexalepis deserticola William · CC0 1.0 · iNaturalist
• Big-headed ant Pheidole megacephala Jake Nitta · CC BY 4.0 · iNaturalist
• Bighorn Sheep Ovis canadensis Irene · CC0 1.0 · iNaturalist
• Bison Bison bison Catherine C. Galley · CC BY 4.0 · iNaturalist
• Black "Speckled" Kingsnake Lampropeltis nigra Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Black & Yellow Garden Spider Argiope aurantiaYoung female with narrow abdomen and striped legs, on zigzag web band Jack Forrester · CC BY 4.0 · iNaturalist
• Black & Yellow Garden Spider Argiope aurantiaAdult female close-up showing yellow-and-black abdomen and orange upper legs Karen McCabe · CC0 1.0 · iNaturalist
• Black & Yellow Garden Spider Argiope aurantiaAdult female head-down at web center, with vertical zigzag silk band Michael J. Papay · CC BY 4.0 · iNaturalist
• Black & Yellow Garden Spider Argiope aurantiaPapery tan egg sac hung under a wooden ledge Natasha Haggard · CC BY 4.0 · iNaturalist
• Black & Yellow Garden Spider Argiope aurantiaAdult male: small, slender and brown, unlike the female Nick Chirico · CC BY 4.0 · iNaturalist
• Black & Yellow Garden Spider Argiope aurantiaGarden spider in its orb web among grass, with zigzag band below xpda · CC BY-SA 4.0 · Wikimedia Commons
• Black Catbird Melanoptila glabrirostris dfaulder · CC BY 2.0 · Wikimedia Commons
• Black Guillemot Cepphus grylle Kristy Morley · CC BY 4.0 · iNaturalist
• Black Hairy Scorpion Hadrurus spadix Marshal Hedin · CC BY 2.0 · Wikimedia Commons
• Black Oystercatcher Haematopus bachmani Claude Lyneis · CC0 1.0 · iNaturalist
• Black Phoebe Sayornis nigricans Bill Levine · CC BY 4.0 · iNaturalist
• Black Phoebe Sayornis nigricans semiatra Kevin Achtmeyer · CC0 1.0 · iNaturalist
• Black Pine Snake Pituophis melanoleucus lodingi Mike Duran · CC BY 4.0 · iNaturalist
• Black Racer Coluber constrictorAdult black racer coiled in grass: plain black body, smooth scales, white chin Everglades NPS from Homestead, Florida, United States · Public domain · Wikimedia Commons
• Black Racer Coluber constrictorOlive yellow-bellied racer form with yellow throat, coiled on soil NPS Photo · Public domain · Wikimedia Commons
• Black Racer Coluber constrictorBlue-grey adult racer coiled on dry grass, smooth scales and large eye User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Black Rail Laterallus jamaicensis Jodhan Fine · CC0 1.0 · iNaturalist
• Black Rat Rattus rattus Davidvraju · CC0 · Wikimedia Commons
• Black Rosy-Finch Leucosticte atrata Laurel Meredyk · CC BY 4.0 · iNaturalist
• Black Scoter Melanitta americana Rachel Lee Harper · CC BY 4.0 · iNaturalist
• Black Scoter Melanitta nigra americana Rachel Lee Harper · CC BY 4.0 · iNaturalist
• Black Skimmer Rynchops niger Evan M. Raskin · CC BY 4.0 · iNaturalist
• Black Swamp Snake Liodytes pygaea Laura Gaudette · CC BY 4.0 · iNaturalist
• Black Tern Chlidonias niger Craig K · CC BY 4.0 · iNaturalist
• Black Toad Anaxyrus exsul RJ Baltierra · CC BY 4.0 · iNaturalist
• Black Turnstone Arenaria melanocephala sprcrkwild · CC BY 4.0 · iNaturalist
• Black widow Latrodectus hesperusWestern black widow (Latrodectus hesperus) female hanging in a messy cobweb Dllu · CC BY-SA 4.0 · Wikimedia Commons
• Black widow Latrodectus hesperus Dllu · CC BY-SA 4.0 · Wikimedia Commons
• Black Widow Latrodectus mactansSouthern black widow (Latrodectus mactans) female showing red hourglass on glossy black belly Shenrich91 · CC BY-SA 3.0 · Wikimedia Commons
• Black-and-white Warbler Mniotilta varia Dan Vickers · CC BY 4.0 · iNaturalist
• Black-backed Oriole Icterus abeillei Jer Clarke · CC BY 4.0 · Wikimedia Commons
• Black-backed Woodpecker Picoides arcticus Rajan Rao · CC BY 4.0 · iNaturalist
• Black-bellied Plover Pluvialis squatarola Russ Namitz · CC0 1.0 · iNaturalist
• Black-bellied Whistling Duck Dendrocygna autumnalis geosesarma · CC BY 4.0 · iNaturalist
• Black-bellied Whistling Duck Dendrocygna autumnalis fulgens Richard Stovall · CC BY 4.0 · iNaturalist
• Black-billed Cuckoo Coccyzus erythropthalmus Jake McCumber · CC BY 4.0 · iNaturalist
• Black-capped Petrel Pterodroma hasitata Dan Vickers · CC BY 4.0 · iNaturalist
• Black-chinned Sparrow Spizella atrogularis James M. Maley · CC BY 4.0 · iNaturalist
• Black-crested Titmouse Baeolophus atricristatus Bao Pham · CC BY 4.0 · iNaturalist
• Black-crowned Night Heron Nycticorax nycticorax Kyle Nessen · CC0 1.0 · iNaturalist
• Black-crowned Night-Heron Nycticorax nycticorax hoactli Kaden Slone · CC BY 4.0 · iNaturalist
• Black-faced Grassquit Tom Field · CC BY 4.0 · iNaturalist
• Black-footed Albatross Phoebastria nigripes Dario Taraborelli · CC0 1.0 · iNaturalist
• Black-footed Ferret Mustela nigripes Colorado Front Range National Wildlife Refuge Complex · CC BY 4.0 · iNaturalist
• Black-headed Grosbeak Pheucticus melanocephalus Dan Vickers · CC BY 4.0 · iNaturalist
• Black-headed Gull Chroicocephalus ridibundus botanygirl · CC BY 4.0 · iNaturalist
• Black-legged Kittiwake Rissa tridactyla Millie Basden · CC BY 4.0 · iNaturalist
• Black-Legged Tick Ixodes scapularisAdult female blacklegged tick on the edge of a leaf. infiniteuniverse · CC0 1.0 · iNaturalist
• Black-Legged Tick Ixodes scapularisAdult female blacklegged tick: black shield and legs, red-orange rear. Jack Forrester · CC BY 4.0 · iNaturalist
• Black-Legged Tick Ixodes scapularis Jack Forrester · CC BY 4.0 · iNaturalist
• Black-necked Gartersnake Thamnophis cyrtopsis Jared Shorma · CC BY 4.0 · iNaturalist
• Black-necked Gartersnake Thamnophis cyrtopsis cyrtopsis Jared Shorma · CC BY 4.0 · iNaturalist
• Black-necked Stilt Himantopus mexicanus Megan Ralph · CC0 1.0 · iNaturalist
• Black-spotted Frog Pelophylax nigromaculatus ノボホショコロトソ · CC BY 4.0 · Wikimedia Commons
• Black-tailed Gnatcatcher Polioptila melanura nmoorhatch · CC BY 4.0 · iNaturalist
• Black-tailed Godwit Limosa limosa Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Black-tailed Rattlesnake Crotalus molossus Brandon Bourassa · CC BY 4.0 · iNaturalist
• Black-throated Blue Warbler Setophaga caerulescens Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Black-throated Gray Warbler Setophaga nigrescens Fyn Kynd · CC BY-SA 4.0 · iNaturalist
• Black-throated Sparrow Amphispiza bilineata RJ Baltierra · CC BY 4.0 · iNaturalist
• Blackburnian Warbler Setophaga fusca Matt Felperin · CC BY 4.0 · iNaturalist
• Blackpoll Warbler Setophaga striata Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Blacktip reef shark Carcharhinus melanopterus Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Blainville’s Horned Lizard Phrynosoma blainvillii Millie Basden · CC BY 4.0 · Wikimedia Commons
• Bleached Earless Lizard Holbrookia maculata ruthveni Jodhan Fine · CC0 1.0 · iNaturalist
• Blue Bunting Cyanocompsa parellina Owen Strickland · CC BY 4.0 · iNaturalist
• Blue Grosbeak Passerina caerulea Jonathan Eisen · CC BY 4.0 · iNaturalist
• Blue Jay Cyanocitta cristata Texas Bird Family · CC BY 4.0 · iNaturalist
• Blue Land Crab Cardisoma guanhumi Lyndsey · CC BY 4.0 · iNaturalist
• Blue Racer Coluber constrictor foxiiBlue racer form: pale blue-grey with yellowish chin, on burned ground Dean Hester · CC BY 4.0 · iNaturalist
• Blue Shark Prionace glauca Juergen Gangoly · CC BY-SA 4.0 · Wikimedia Commons
• Blue Spiny Lizard Sceloporus cyanogenys Brandon Bourassa · CC BY 4.0 · iNaturalist
• Blue Whale Balaenoptera musculus Carina Gsottbauer · CC BY-SA 4.0 · Wikimedia Commons
• Blue-crowned Parakeet Aratinga acuticaudata Damien Wallace · CC0 1.0 · iNaturalist
• Blue-headed Vireo Vireo solitarius Dario Taraborelli · CC0 1.0 · iNaturalist
• Blue-throated Hummingbird Lampornis clemenciae Dan Vickers · CC BY 4.0 · iNaturalist
• Blue-winged Teal Spatula discors Eric Klug · CC BY 4.0 · iNaturalist
• Bluethroat Luscinia svecica Dan Vickers · CC BY 4.0 · iNaturalist
• Blunt-nosed Leopard Lizard Gambelia sila Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Bobcat Lynx rufusSitting bobcat showing black ear backs, ear tufts and barred legs Brandon Johnson · CC BY 4.0 · iNaturalist
• Bobcat Lynx rufusTwo spotted kittens at a rocky den David Rankin · CC BY 4.0 · iNaturalist
• Bobcat Lynx rufusGrayish bobcat on desert rock slope in Death Valley Matt Berger · CC BY 4.0 · iNaturalist
• Bobcat Lynx rufusBobcat on a rock face from behind, showing short tail with white underside Matt Berger · CC BY 4.0 · iNaturalist
• Bobcat Lynx rufus rufus Mike Brady · CC BY 4.0 · iNaturalist
• Bobcat Lynx rufusBobcat stepping across rocks in a stream, spotted coat and short tail National Marine Sanctuaries · Public domain · Wikimedia Commons
• Bobcat Lynx rufusReddish bobcat in grass, showing face streaks and cheek tufts NPS · Public domain · Wikimedia Commons
• Bobolink Dolichonyx oryzivorus Dan Vickers · CC BY 4.0 · iNaturalist
• Bog Turtle Glyptemys muhlenbergii U.S. Fish and Wildlife Service Southeast Region · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Bohemian Waxwing Bombycilla garrulus Matt Felperin · CC BY 4.0 · iNaturalist
• Bolas Spider Mastophora hutchinsoni Christina Butler from Georgia, United States · CC BY 2.0 · Wikimedia Commons
• Bold Jumper Phidippus audaxMale bold jumping spider (Phidippus audax) on wood, showing green jaws Kelsey Low · CC BY 4.0 · iNaturalist
• Bold Jumper Phidippus audaxBold jumping spider (Phidippus audax) face-on, showing large front eyes and green jaws Zygy · CC0 1.0 · iNaturalist
• Bold Jumper Phidippus audaxBold jumping spider (Phidippus audax) from above, showing white spots on black abdomen Zygy · CC0 1.0 · iNaturalist
• Bolson's Tortoise Gopherus flavomarginatus Mbtrap · CC BY-SA 3.0 · Wikimedia Commons
• Bonaparte's Gull Chroicocephalus philadelphia Ben · CC0 1.0 · iNaturalist
• Bonnethead Sphyrna tiburoBonnethead (Sphyrna tiburo) from above, rounded shovel-shaped head Quinn · CC BY 4.0 · iNaturalist
• Boreal Chickadee Poecile hudsonicus Bill Keim · CC BY 4.0 · iNaturalist
• Bothriocyrtum californicumCalifornia trapdoor spider (Bothriocyrtum californicum) at the mouth of its silk-lined burrow Cory Butterfield · CC BY 4.0 · iNaturalist
• Bothriocyrtum californicumAdult male California trapdoor spider (Bothriocyrtum californicum) on pavement hyaeth · CC BY 4.0 · iNaturalist
• Botteri's Sparrow Peucaea botterii Alina Martin · CC BY 4.0 · iNaturalist
• Bottle-nosed Dolphin Tursiops truncatus Dean Hester · CC BY 4.0 · iNaturalist
• Bowl and Doily Spider Frontinella pyramitela xpda · CC BY-SA 4.0 · Wikimedia Commons
• Boxelder bug Boisea trivittataMating pair on leaves, with orange rather than red lines Jo Roberts · CC BY 4.0 · iNaturalist
• Boxelder bug Boisea trivittataAdult on a window screen, showing red eyes and red lines on a black back Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Boxelder bug Boisea trivittataTop view showing the three red stripes behind the head Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Boxelder bug Boisea trivittataAdult resting on tree bark, side view Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Boxelder bug Boisea trivittataBright red nymph with dark wing buds and darker head Katja Schulz · CC BY 4.0 · iNaturalist
• Brahminy Blind Snake Indotyphlops braminus Davidvraju · CC BY-SA 4.0 · Wikimedia Commons
• Brambling Fringilla montifringilla Dan Vickers · CC BY 4.0 · iNaturalist
• Brandt's Cormorant Phalacrocorax penicillatus Cricket Raspet · CC BY 4.0 · iNaturalist
• Brant Branta bernicla Chris Acree · CC BY-SA 4.0 · iNaturalist
• Brewer's Blackbird Euphagus cyanocephalus Ben · CC0 1.0 · iNaturalist
• Brewer's Sparrow Spizella breweri Casey H. Richart · CC BY 4.0 · iNaturalist
• Bridled Tern Onychoprion anaethetus ian bullock · CC BY 4.0 · iNaturalist
• Bridled Titmouse Baeolophus wollweberi Matt Felperin · CC BY 4.0 · iNaturalist
• Bristle-thighed Curlew Numenius tahitiensis steve b · CC0 1.0 · iNaturalist
• Broad-banded Copperhead Agkistrodon laticinctusBroad-banded copperhead (Agkistrodon laticinctus) coiled at a pavement edge, wide dark bands Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Broad-banded Copperhead Agkistrodon laticinctusBroad-banded copperhead (Agkistrodon laticinctus) in soil, pale-edged wide bands Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Broad-Banded Watersnake Nerodia fasciata confluens Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Broad-billed Sandpiper Calidris falcinellus Afsarnayakkan · CC BY-SA 4.0 · Wikimedia Commons
• Broad-faced Sac Spider Neochelas tranquillus Jim Moore (Maryland) · CC BY 4.0 · iNaturalist
• Broad-Faced Sac Spider Trachelas tranquillus Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Broad-headed Skink Plestiodon laticepsMale climbing a stump; broad-headed skinks often climb trees. chloe ⋆˚꩜｡ · CC BY-SA 4.0 · iNaturalist
• Broad-headed Skink Plestiodon laticepsLarge adult male: plain reddish-brown body and wide orange-red head. Laura Gaudette · CC BY 4.0 · iNaturalist
• Broad-headed Skink Plestiodon laticeps Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Broad-headed Skink Plestiodon laticepsClose-up of a male's swollen orange jowls and smooth, shiny scales. Sam Kieschnick · CC BY 4.0 · iNaturalist
• Broad-tailed Hummingbird Selasphorus platycercus Daughter Dad · CC BY 4.0 · iNaturalist
• Bronze Frog Lithobates clamitans Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Bronze Jumper Eris militaris Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Bronzed Cowbird Molothrus aeneus loyei CK2AZ · CC BY 4.0 · iNaturalist
• Brown Anole Anolis sagrei Donald Hobern from Copenhagen, Denmark · CC BY 2.0 · Wikimedia Commons
• Brown Anole Anolis sagreiMale brown anole showing its orange-red throat fan with a pale edge. Everglades NPS from Homestead, Florida, United States · Public domain · Wikimedia Commons
• Brown Basilisk Basiliscus vittatus Nick Tobler (Cowturtle) · CC BY 4.0 · iNaturalist
• Brown Booby Sula leucogaster Matt Felperin · CC BY 4.0 · iNaturalist
• Brown Crab Spider Xysticus feroxTan ground crab spider (Xysticus ferox) female guarding her egg sac on a leaf Sheila S · CC BY 4.0 · iNaturalist
• Brown Jay Psilorhinus morio Dan Vickers · CC BY 4.0 · iNaturalist
• Brown marmorated stink bug Halyomorpha halysAdult female beside a fresh cluster of pale eggs on a leaf. Alexa Hoffman · CC BY 4.0 · iNaturalist
• Brown marmorated stink bug Halyomorpha halysLate-stage nymph with spiny sides and white-banded legs. Gavin Slater · CC BY 4.0 · iNaturalist
• Brown Noddy Anous stolidus ian bullock · CC BY 4.0 · iNaturalist
• Brown Pelican Pelecanus occidentalis Laura Gaudette · CC BY 4.0 · iNaturalist
• Brown Rat Rattus norvegicus Biswarup Ganguly · CC BY 3.0 · Wikimedia Commons
• Brown Recluse Loxosceles reclusaFront view with dark violin on head and uniform tan legs iamfindingplants · CC0 1.0 · iNaturalist
• Brown Recluse Loxosceles reclusaAdult on wood, plain dark abdomen and long uniform legs mayfly1963 · CC BY 4.0 · iNaturalist
• Brown Recluse Loxosceles reclusaAdult on sandy ground, dark violin on the head region, plain brown abdomen Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Brown Recluse Loxosceles reclusaTop view showing the violin mark and small eye pairs at its base Sam Kieschnick · CC BY 4.0 · iNaturalist
• Brown Snake Storeria dekayiAdult tucked among dead leaves, dark spots under eye and on neck Jesse Rorabaugh · CC0 1.0 · iNaturalist
• Brown Snake Storeria dekayiBrown snakes coiled in pine straw, showing pale back stripe edged by dark spots Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Brown Snake Storeria dekayiYoung brown snake with dark head and pale nape Michael J. Papay · CC BY 4.0 · iNaturalist
• Brown Snake Storeria dekayiHead showing dark spot below the eye, dark neck spot and keeled scales Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Brown Snake Storeria dekayiAdult female coiled in dry grass, pale tan with faint spot rows Tigran Tadevosyan · CC BY 4.0 · iNaturalist
• Brown Thrasher Toxostoma rufum Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Brown tree snake Boiga irregularis Pavel Kirillov from St.Petersburg, Russia · CC BY-SA 2.0 · Wikimedia Commons
• Brown Vinesnake Oxybelis aeneus Diego de Medeiros Bento · CC BY-SA 4.0 · Wikimedia Commons
• Brown Water Snake Nerodia taxispilota Leila Dasher · CC BY 4.0 · iNaturalist
• Brown Widow Latrodectus geometricusMale brown widow (Latrodectus geometricus): tiny, long-legged, with patterned abdomen Elizabeth · CC0 1.0 · iNaturalist
• Brown Widow Latrodectus geometricusBrown widow (Latrodectus geometricus) underside showing orange hourglass Jade Fortnash · CC0 1.0 · iNaturalist
• Brown Widow Latrodectus geometricusBrown widow (Latrodectus geometricus) female with mottled tan abdomen and dark-banded legs Jesse Rorabaugh · CC0 1.0 · iNaturalist
• Brown Widow Latrodectus geometricusDark brown widow (Latrodectus geometricus) female with orange marks and pale-banded legs Meghan Waldon · CC BY 4.0 · iNaturalist
• Brown Widow Latrodectus geometricusBrown widow (Latrodectus geometricus) beside its spiky egg sacs Thaysnatani · CC BY-SA 4.0 · Wikimedia Commons
• Brown-backed Solitaire Myadestes occidentalis Celloc85 · CC BY 4.0 · Wikimedia Commons
• Brown-capped Rosy-Finch Leucosticte australis Dean Hester · CC BY 4.0 · iNaturalist
• Brown-chested Martin Progne tapera Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Brown-headed Cowbird Molothrus ater Shirley Zundell · CC BY 4.0 · iNaturalist
• Brown-headed Nuthatch Sitta pusilla skitterbug · CC BY 4.0 · iNaturalist
• Brush-legged Wolf Spider Schizocosa ocreata WanderingMogwai · CC BY-SA 4.0 · Wikimedia Commons
• Buck Moth (caterpillar) Hemileuca maia Jake McCumber · CC BY 4.0 · iNaturalist
• Buff-bellied Hummingbird Amazilia yucatanensis tcantrell52 · CC BY 4.0 · iNaturalist
• Buff-breasted Flycatcher Empidonax fulvifrons Shawn Taylor · CC BY 4.0 · iNaturalist
• Buff-breasted Sandpiper Calidris subruficollis Jacob Crawford · CC BY 4.0 · iNaturalist
• Buff-collared Nightjar Antrostomus ridgwayi Adam Jackson · CC0 1.0 · iNaturalist
• Bufflehead Bucephala albeola Laura Liedtke · CC BY 4.0 · iNaturalist
• Bull Shark Carcharhinus leucasAdult bull shark cruising over sand, showing blunt snout and stout body Judita bagon · CC BY-SA 3.0 · Wikimedia Commons
• Bull Shark Carcharhinus leucasBull shark seen from above in clear shallow water Lucy Keith-Diagne · CC BY 4.0 · iNaturalist
• Burmese Python Python bivittatusAdult crossing a road at night, showing dark black-edged blotches on tan Court Harding · CC BY 4.0 · iNaturalist
• Burmese Python Python molurus Praveenp · CC BY-SA 4.0 · Wikimedia Commons
• Burmese Python Python bivittatusPython stretched along a shell-and-rock shoreline at the water's edge WF_MI · CC BY 4.0 · iNaturalist
• Burro Equus asinus CK2AZ · CC BY 4.0 · iNaturalist
• Burrowing Owl Athene cunicularia Scott Clark · CC BY 4.0 · iNaturalist
• Bushtit Psaltriparus minimus Jonathan Eisen · CC BY 4.0 · iNaturalist
• Buteo jamaicensis krideriiPale Krider's red-tailed hawk, immature, soaring Dr. Andrew G. Cannizzaro · CC BY 4.0 · iNaturalist
• Butler's Gartersnake Thamnophis butleri Stanton · CC BY-SA 4.0 · Wikimedia Commons
• Buttonhook Leafbeetle Jumping Spider Sassacus vitis Kaldari · CC0 · Wikimedia Commons

C

• Cabbage White Pieris rapae Nancy Clogston · CC0 1.0 · iNaturalist
• Cackling Goose Branta hutchinsii Tser · CC BY 4.0 · iNaturalist
• Cactus Wren Campylorhynchus brunneicapillus couesi Kevin Achtmeyer · CC0 1.0 · iNaturalist
• Cactus Wren Campylorhynchus brunneicapillus Rosario Douglas · CC BY 4.0 · iNaturalist
• California Condor Gymnogyps californianus Dean Hester · CC BY 4.0 · iNaturalist
• California Kingsnake Lampropeltis californiaeAdult stretched across bare ground, dark body with narrow pale bands Pacific Southwest Region USFWS from Sacramento, US · Public domain · Wikimedia Commons
• California Kingsnake Lampropeltis californiaeClose side view showing glossy scales and white bands widening low on the sides Pacific Southwest Region USFWS from Sacramento, US · Public domain · Wikimedia Commons
• California Kingsnake Lampropeltis californiaeKingsnake moving through shaded desert litter under a mesquite branch Pacific Southwest Region USFWS from Sacramento, US · Public domain · Wikimedia Commons
• California Leaf-nosed Bat Macrotus californicus kclarksdnhmorg · CC BY 4.0 · iNaturalist
• California Legless Lizard Anniella pulchra Henrik Kibak · CC BY 4.0 · iNaturalist
• California Lyresnake Trimorphodon lyrophanes Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• California Mountain Kingsnake Lampropeltis zonata Parsa Fard · CC BY 4.0 · iNaturalist
• California Quail Callipepla californica Michael Warner · CC BY 4.0 · iNaturalist
• California Red-legged Frog Rana draytonii Zack Abbey · CC BY 4.0 · iNaturalist
• California Sea Lion Zalophus californianus Jonathan Eisen · CC BY 4.0 · iNaturalist
• California Thrasher Toxostoma redivivum Henrik Kibak · CC BY 4.0 · iNaturalist
• California Towhee Melozone crissalis jubileej · CC0 1.0 · iNaturalist
• California Treefrog Pseudacris cadaverina Cristhian Mace · CC BY 4.0 · iNaturalist
• Calliope Hummingbird Selasphorus calliope Dario Taraborelli · CC0 1.0 · iNaturalist
• Canada Geese Branta canadensis Paul Danese · CC BY-SA 4.0 · Wikimedia Commons
• Canada Jay Perisoreus canadensis Alan Rockefeller · CC BY 4.0 · iNaturalist
• Canada Jay Perisoreus canadensis capitalis Jonathan Layman · CC BY 4.0 · iNaturalist
• Canada Lynx Lynx canadensis Norma Malinowski · CC BY 4.0 · iNaturalist
• Canada Warbler Cardellina canadensis Matt Felperin · CC BY 4.0 · iNaturalist
• Cane Toad Rhinella marinaMottled brown adult in lawn grass at night Jade Fortnash · CC0 1.0 · iNaturalist
• Cane Toad Rhinella marinaYellowish adult at night, showing the large gland behind the eye Maximilian Paradiz from Amsterdam, Netherlands · CC BY 2.0 · Wikimedia Commons
• Canebrake Rattlesnake (Coastal Plain Population of Timber Rattlesnake) Crotalus horridusBrown adult coiled beside a rock, dark crossbands on a tan ground Ann McKenzie · CC0 1.0 · iNaturalist
• Canebrake Rattlesnake (Coastal Plain Population of Timber Rattlesnake) Crotalus horridusDark-phase adult coiled in leaf litter, black head and pale-edged chevrons Michael J. Papay · CC BY 4.0 · iNaturalist
• Canebrake Rattlesnake (Coastal Plain Population of Timber Rattlesnake) Crotalus horridusYellow-phase adult coiled in pine needles, showing black chevron crossbands and rust stripe NPS Photo · Public domain · Wikimedia Commons
• Canebrake Rattlesnake (Coastal Plain Population of Timber Rattlesnake) Crotalus horridusAdult resting in a rock crevice, a typical den-site setting User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Canis lupus occidentalisWolf pups crossing a tidal mudflat in Lake Clark National Park Ty Creelan · CC BY-SA 4.0 · iNaturalist
• Cannonball jellyfish Stomolophus meleagris Nonbinary-Naturalist · CC0 1.0 · iNaturalist
• Canvasback Aythya valisineria Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Canyon Lizard Sceloporus merriami EJ Burns · CC BY 4.0 · iNaturalist
• Canyon Spotted Whiptail Aspidoscelis burti ALAN SCHMIERER · CC0 · Wikimedia Commons
• Canyon Towhee Melozone fusca Kaden Slone · CC BY 4.0 · iNaturalist
• Canyon Wren Catherpes mexicanus Dan Vickers · CC BY 4.0 · iNaturalist
• Cape May Warbler Setophaga tigrina Mike Mulqueen · CC0 1.0 · iNaturalist
• Capybara Hydrochoerus hydrochaeris Giles Laurent · CC BY-SA 4.0 · Wikimedia Commons
• Caribbean Huntsman Spider Heteropoda venatoriaPantropical huntsman (Heteropoda venatoria) flat on a white wall, legs spread sideways kcthetc1 · CC0 1.0 · iNaturalist
• Caribbean Huntsman Spider Heteropoda venatoriaPantropical huntsman (Heteropoda venatoria) close-up: pale face band and black-spotted bristly legs kcthetc1 · CC0 1.0 · iNaturalist
• Caribbean Huntsman Spider Heteropoda venatoriaMale pantropical huntsman (Heteropoda venatoria) flat against a wooden door Laura Davis · CC BY 4.0 · iNaturalist
• Carolina Pygmy Rattlesnake Sistrurus miliarius miliarius jakeschneider00 · CC BY-SA 4.0 · iNaturalist
• Carolina Saltmarsh (Water) Snake Nerodia sipedon williamengelsi Joshua Liverman · CC BY 4.0 · iNaturalist
• Carolina Scorpion Vaejovis carolinianus Leila Dasher · CC BY 4.0 · iNaturalist
• Carolina Wren Thryothorus ludovicianus Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Caspian Tern Hydroprogne caspia Daughter Dad · CC BY 4.0 · iNaturalist
• Cassin's Finch Haemorhous cassinii Daughter Dad · CC BY 4.0 · iNaturalist
• Cassin's Sparrow Peucaea cassinii Karen Szafrajda · CC BY 4.0 · iNaturalist
• Cat-eyed Snake Leptodeira septentrionalis Stanton · CC BY-SA 4.0 · Wikimedia Commons
• Cedar Waxwing Bombycilla cedrorum Shirley Zundell · CC BY 4.0 · iNaturalist
• Central American Indigo Snake Drymarchon melanurus Mike Duran · CC BY 4.0 · iNaturalist
• Central Ratsnake Pantherophis alleghaniensisAdult stretched along a fallen branch in leaf litter Tyler Savitski · CC BY-SA 4.0 · Wikimedia Commons
• Central Ratsnake Pantherophis alleghaniensisAdult coiled against a wooden wall, dark body with faint pale blotch traces Whitney Mattila · CC BY 4.0 · iNaturalist
• Cereal Leaf Beetle Oulema melanopus Bill Keim · CC BY 4.0 · iNaturalist
• Cerulean Warbler Setophaga cerulea Matt Schenck · CC BY 4.0 · iNaturalist
• Chain catshark Scyliorhinus retifer NOAA Photo Library · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Chalybion californicumBlue mud dauber (Chalybion californicum) close-up, metallic blue sheen Healthy Yards · CC BY 4.0 · iNaturalist
• Chalybion californicumBlue mud dauber (Chalybion californicum) on a leaf, metallic blue-black Niki Robertson · CC BY 4.0 · iNaturalist
• Checkered Cobweb Spider Steatoda triangulosa dhasdf · CC BY 4.0 · iNaturalist
• Checkered Gartersnake Thamnophis marcianusCheckered garter snake on cardboard, checkerboard spots between pale stripes U.S. Customs and Border Protection · Public domain · Wikimedia Commons
• Checkered Gartersnake Thamnophis marcianus U.S. Customs and Border Protection · Public domain · Wikimedia Commons
• Chestnut-backed Chickadee Poecile rufescens Cricket Raspet · CC BY 4.0 · iNaturalist
• Chestnut-collared Longspur Calcarius ornatus InAweofGod'sCreation · CC BY 4.0 · iNaturalist
• Chestnut-sided Warbler Setophaga pensylvanica Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Chihuahuan Black-headed Snake Tantilla wilcoxi Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Chihuahuan Hook-nosed Snake Gyalopion canum L. Miles Horne · CC BY 4.0 · iNaturalist
• Chihuahuan Lyresnake Trimorphodon vilkinsonii highsinger · CC BY 4.0 · iNaturalist
• Chihuahuan Nightsnake Hypsiglena jani Court Harding · CC BY 4.0 · iNaturalist
• Chihuahuan Spotted Whiptail Aspidoscelis exsanguis William · CC0 1.0 · iNaturalist
• Chinese Mantis Tenodera sinensisChinese mantis (Tenodera sinensis), large green adult female on a shrub Bill Keim · CC BY 4.0 · iNaturalist
• Chinese Mantis Tenodera sinensisChinese mantis (Tenodera sinensis) face, striped facial shield and large eyes Bill Keim · CC BY 4.0 · iNaturalist
• Chinese Mantis Tenodera sinensisChinese mantis (Tenodera sinensis) in praying pose among garden plants M. Whitson · CC BY 4.0 · iNaturalist
• Chipping Sparrow Spizella passerina froggymum · CC BY 4.0 · iNaturalist
• Chipping Sparrow Spizella passerina arizonae Peter Chen 2.0 · CC BY 4.0 · iNaturalist
• Chocolate-brown Fishing Spider Dolomedes vittatusBanded fishing spider (Dolomedes vittatus) male with pale stripe edging body Will Kuhn · CC BY 4.0 · iNaturalist
• Chukar Alectoris chukar Jeff Bartlett · CC BY 4.0 · iNaturalist
• Cicada killer Sphecius speciosusClose view of abdomen markings with hooked black edges and reddish head Alex Fallot · CC BY 4.0 · iNaturalist
• Cicada killer Sphecius speciosusAdult carrying a cicada up a tree trunk G Key · CC0 1.0 · iNaturalist
• Cicada killer Sphecius speciosusAdult on a leaf: orange head, red thorax spot, yellow-banded black abdomen Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Cicada killer Sphecius speciosusAdult holding a paralyzed cicada on the ground Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Cicada killer Sphecius speciosusFemale on bare cracked soil sarah1862 · CC BY 4.0 · iNaturalist
• Cinnamon Teal Spatula cyanoptera Cricket Raspet · CC BY 4.0 · iNaturalist
• Cinnamon Teal Duck Spatula cyanoptera septentrionalium The Vertebrate Pokédex · CC0 1.0 · iNaturalist
• Clapper Rail Rallus crepitans Matt Schultz · CC0 1.0 · iNaturalist
• Clark's Grebe Aechmophorus clarkii Annette Herz · CC BY 4.0 · iNaturalist
• Clark’s Spiny Lizard Sceloporus clarkii Tom Kennedy · CC BY 4.0 · iNaturalist
• Clay-colored Sparrow Spizella pallida Matt Pelikan · CC BY 4.0 · iNaturalist
• Clay-colored Thrush Turdus grayi tcantrell52 · CC BY 4.0 · iNaturalist
• Cliff Chipmunk Tamias dorsalis Laura Gaudette · CC BY 4.0 · iNaturalist
• Cliff Swallow Petrochelidon pyrrhonota Dean Hester · CC BY 4.0 · iNaturalist
• Clown-faced Spider Spintharus flavidus jfox16 · CC BY 4.0 · iNaturalist
• Coachella Fringe-toed Lizard Uma inornata Adam Jackson · CC0 1.0 · iNaturalist
• Coachwhip Masticophis flagellum flagellumDark individual: black head, with pale-edged scales giving a braided tail. Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Coachwhip Masticophis flagellum Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Coachwhip Masticophis flagellum flagellum Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Coal Skink Plestiodon anthracinus Thomas Koffel · CC BY 4.0 · iNaturalist
• Coast Nightsnake Hypsiglena ochrorhynchus Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Coastal Plain Swamp Sparrow Melospiza georgiana nigrescens Andy Wilson · CC0 1.0 · iNaturalist
• Coastal Plains Leopard Frog Lithobates sphenocephalus utricularius Sam Kieschnick · CC BY 4.0 · iNaturalist
• Coastal Tailed Frog Ascaphus truei John G. Phillips · CC BY 4.0 · iNaturalist
• cobweb spider Phoroncidia americana John P Friel · CC BY 4.0 · iNaturalist
• collared peccary Pecari tajacuJavelina walking across dry grass, pale collar visible across its shoulders Cody Stricker · CC BY 4.0 · iNaturalist
• collared peccary Pecari tajacuTwo javelinas standing together in a grassy clearing Eleanor Pate · CC BY 4.0 · iNaturalist
• collared peccary Pecari tajacuFace close-up showing pig-like snout and salt-and-pepper bristles Josmar Olivares · CC BY 4.0 · iNaturalist
• collared peccary Pecari tajacuAdult javelina crossing a path followed by two reddish-brown young Mike Ostrowski · CC BY-SA 4.0 · iNaturalist
• Collared Plover Anarhynchus collaris Pablo Silva · CC BY 4.0 · Wikimedia Commons
• Colorado Desert Fringe-toed Lizard Uma notata (c) kclarksdnhmorg, some rights reserved (CC BY) · CC BY 4.0 · Wikimedia Commons
• Common Black Hawk Buteogallus anthracinus anthracinus Quinn · CC BY-SA 4.0 · iNaturalist
• Common Caiman Caiman crocodilusSpectacled caiman swimming low in open water, showing its narrow snout. Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Common Checkered Whiptail Aspidoscelis tesselatus Catherine C. Galley · CC BY 4.0 · iNaturalist
• Common Chuckwalla Sauromalus aterAdult male basking in Arizona: black body and an orange tail. Dan Vickers · CC BY 4.0 · iNaturalist
• Common Chuckwalla Sauromalus aterTwo chuckwallas basking together on a rock ledge in Arizona. Dan Vickers · CC BY 4.0 · iNaturalist
• Common Chuckwalla Sauromalus ater Dan Vickers · CC BY 4.0 · iNaturalist
• Common Chuckwalla Sauromalus aterAll-dark chuckwalla basking on dark rock; note the loose neck folds. Souza Cyndi, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons
• Common Coqui Eleutherodactylus coquiSmall coqui next to a US penny for scale Cathybwl · CC BY-SA 3.0 · Wikimedia Commons
• Common Coqui Eleutherodactylus coquiTan coqui on a leaf, showing toe pads, gold eye and cream belly Cricket Raspet · CC BY 4.0 · Wikimedia Commons
• Common Coqui Eleutherodactylus coquiPale coqui perched on a leaf at night Damien Wallace · CC0 1.0 · iNaturalist
• Common Coqui Eleutherodactylus coquiTop view of a dark brown coqui with a thin pale back stripe and large toe pads kbkash · CC0 1.0 · iNaturalist
• Common Coqui Eleutherodactylus coquiMale calling from a dry leaf, throat sac inflated Slunky · CC BY 4.0 · iNaturalist
• Common Dolphin Delphinus delphis Cricket Raspet · CC BY 4.0 · iNaturalist
• Common eastern bumble bee Bombus impatiens Juan Carlos Fonseca Mata · CC BY-SA 4.0 · Wikimedia Commons
• Common Eider Somateria mollissima Ryan F. Mandelbaum · CC BY 4.0 · iNaturalist
• Common Fishing Spider Dolomedes tenebrosusFemale dark fishing spider (Dolomedes tenebrosus) on a pale wall Brighton Lee · CC0 1.0 · iNaturalist
• Common Fishing Spider Dolomedes tenebrosusDark fishing spider (Dolomedes tenebrosus) on a board, banded legs held wide Naota3k · CC BY-SA 4.0 · Wikimedia Commons
• Common Gallinule Gallinula galeata steve b · CC0 1.0 · iNaturalist
• Common Garter Snake Thamnophis sirtalisCommon garter snake (red-sided form) on bare dirt, three pale stripes and red side flecks kclarksdnhmorg · CC BY 4.0 · iNaturalist
• Common Garter Snake Thamnophis sirtalisCommon garter snake on bark mulch, showing back and side stripes USFWSmidwest · Public domain · Wikimedia Commons
• Common Goldeneye Bucephala clangula Timothy McNitt · CC BY 4.0 · iNaturalist
• Common Grackle Quiscalus quiscula Andy Wilson · CC0 1.0 · iNaturalist
• Common Grackle Quiscalus quiscula versicolor Kaden Slone · CC BY 4.0 · iNaturalist
• Common Gray Fox Urocyon cinereoargenteus scottii Elliott Gordon · CC BY 4.0 · iNaturalist
• Common Gray Fox Urocyon cinereoargenteus Mike's Birds from Riverside, CA, US · CC BY-SA 2.0 · Wikimedia Commons
• Common Ground Dove Columbina passerina pallescens Nigel Voaden · CC BY 4.0 · iNaturalist
• Common Ground Dove Columbina passerina Wes Gapp · CC BY 4.0 · iNaturalist
• Common Kingsnake Lampropeltis getulaEastern kingsnake: glossy black with narrow cream crossbands that link into a chain. Matthew Lumsden · CC BY 4.0 · iNaturalist
• Common Kingsnake Lampropeltis getula Matthew Lumsden · CC BY 4.0 · iNaturalist
• Common Leafbeetle Jumping Spider Sassacus papenhoei Benjamin Burgunder · CC BY 4.0 · iNaturalist
• Common Lesser Earless Lizard Holbrookia maculata dconvertini · CC BY-SA 2.0 · Wikimedia Commons
• Common Loon Gavia immer Matt Felperin · CC BY 4.0 · iNaturalist
• Common Merganser Mergus merganser americanus Dick Mansfield · CC BY 4.0 · iNaturalist
• Common Merganser Mergus merganser Dick Mansfield · CC BY 4.0 · iNaturalist
• Common Minke Whale Balaenoptera acutorostrata Ryan F. Mandelbaum · CC BY 4.0 · iNaturalist
• Common Musk Turtle Sternotherus odoratusEastern musk turtle (stinkpot) basking on a stump, showing yellow head stripes. Curtis Meyers · CC BY-SA 4.0 · iNaturalist
• Common Musk Turtle Sternotherus odoratus Curtis Meyers · CC BY-SA 4.0 · iNaturalist
• Common Muskrat Ondatra zibethicus Ken Clark · CC BY 4.0 · iNaturalist
• Common Myna Brodie Cass Talbott · CC BY 4.0 · iNaturalist
• Common Nighthawk Chordeiles minor Sam Eberhard · CC BY 4.0 · iNaturalist
• Common Pauraque Nyctidromus albicollis JD Flores · CC BY 4.0 · iNaturalist
• Common Peafowl Pavo cristatus Shirley Zundell · CC BY 4.0 · iNaturalist
• Common Pochard Aythya ferina Zoran Gavrilović · CC BY-SA 4.0 · Wikimedia Commons
• Common Poorwill Phalaenoptilus nuttallii nuttallii The Vertebrate Pokédex · CC0 1.0 · iNaturalist
• Common Porcupine Erethizon dorsatumClose-up of face framed by white-banded quills Colin Canterbury/USFWS · Public domain · Wikimedia Commons
• Common Porcupine Erethizon dorsatumYoung porcupine with dark fur and short quills among fallen branches Dawn Nelson · CC BY 4.0 · iNaturalist
• Common Porcupine Erethizon dorsatumAdult walking on sandy ground, showing yellow-tipped quills and high-arched back The Cosmonaut · CC BY-SA 2.5 ca · Wikimedia Commons
• Common Porcupine Erethizon dorsatumPorcupine resting in a leafless cottonwood tree USFWS Mountain-Prairie · Public domain · Wikimedia Commons
• Common Raccoon Procyon lotor Marco Antonino Ramos Rodríguez · CC BY-SA 4.0 · Wikimedia Commons
• Common Rainbow Snake Farancia erytrogramma erytrogramma Joshua Liverman · CC BY 4.0 · iNaturalist
• Common Raven Corvus corax sinuatus Frank Schulenburg · CC BY-SA 4.0 · iNaturalist
• Common Raven Corvus corax principalis Romain Boisseau · CC BY-SA 4.0 · iNaturalist
• Common Redpoll Acanthis flammea gpete · CC BY 4.0 · iNaturalist
• Common Ribbonsnake Thamnophis saurita saurita David LaMagna · CC BY 4.0 · iNaturalist
• Common Rosefinch Carpodacus erythrinus Estormiz · CC0 · Wikimedia Commons
• Common Sagebrush Lizard Sceloporus graciosus Ben · CC0 1.0 · iNaturalist
• Common Sharp-tailed Snake Contia tenuis Parsa Fard · CC BY 4.0 · iNaturalist
• Common Side-blotched Lizard Uta stansburiana William Walker · CC BY 4.0 · iNaturalist
• Common Snapping Turtle Chelydra serpentinaHead-on view: large head, eyes set high, muddy keeled shell Abbie King · CC BY 4.0 · iNaturalist
• Common Snapping Turtle Chelydra serpentinaAdult on gravel with large head raised and algae on its shell Cephas · CC BY-SA 4.0 · Wikimedia Commons
• Common Snapping Turtle Chelydra serpentinaHatchlings with rough, keeled shells and long tails Martyn Drabik-Hamshare · CC0 1.0 · iNaturalist
• Common Snapping Turtle Chelydra serpentinaAdult in shallow water seen from above: long saw-toothed tail and big head Michelle W. （鍾偉瑋） · CC BY 4.0 · iNaturalist
• Common Snapping Turtle Chelydra serpentinaWalking adult showing the long tail with saw-toothed scales Siddarth Machado · CC BY 4.0 · iNaturalist
• Common Star-bellied Orbweaver Acanthepeira stellata Douglas Hooper · CC BY 4.0 · iNaturalist
• Common Tern Sterna hirundo Joey Devine · CC BY 4.0 · iNaturalist
• Common Tern Sterna hirundo hirundo Seth Wollney · CC BY 4.0 · iNaturalist
• Common Watersnake Nerodia sipedonHead raised from shallow water, showing round pupil John Stockla · CC BY 4.0 · Wikimedia Commons
• Common Watersnake Nerodia sipedonAdult basking at a path edge; crossbands in front break into blotches U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons
• Common Yellowthroat Geothlypis trichas Shirley Zundell · CC BY 4.0 · iNaturalist
• Connecticut Warbler Oporornis agilis Carter Dorscht · CC0 1.0 · iNaturalist
• Convict Zebra Spider Salticus austinensis Calinsdad · CC0 1.0 · iNaturalist
• Copper-bellied Watersnake Nerodia erythrogaster Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Copperhead Agkistrodon contortrixJuvenile eastern copperhead with bright yellow tail tip Alan Rockefeller · CC BY 4.0 · iNaturalist
• Copperhead Agkistrodon contortrixEastern copperhead camouflaged among fallen leaves beside a log NPS Photo · Public domain · Wikimedia Commons
• Copperhead Agkistrodon contortrixCoppery unpatterned head with vertical pupil and pale lip line User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Copperhead Agkistrodon contortrixAdult eastern copperhead coiled in leaf litter, showing hourglass crossbands USFWSmidwest · Public domain · Wikimedia Commons
• Coral Pink Sand Dunes tiger beetle Cicindela albissima laiet17 · CC0 1.0 · iNaturalist
• Corn Snake Pantherophis guttatusAdult coiled in shallow water, showing black-edged orange blotches and checkered belly Bea Leiderman · CC BY 4.0 · iNaturalist
• Corn Snake Pantherophis guttatusTop of head showing spear-shaped mark pointing between the eyes Kevin Anderson · CC BY 4.0 · iNaturalist
• Corn Snake Pantherophis guttatusCoiled adult on grass, facing camera, showing spear-shaped head mark NPS photo · Public domain · Wikimedia Commons
• Corn Snake Pantherophis guttatusAdult crossing a paved road at night Scott Allen Davis · CC BY 4.0 · iNaturalist
• Corn Snake Pantherophis guttatusJuvenile coiled under a log, showing dark-edged blotches and head pattern Tom Kennedy · CC BY 4.0 · iNaturalist
• Costa's Hummingbird Calypte costae David Rankin · CC BY 4.0 · iNaturalist
• Cottonmouth Agkistrodon piscivorusDark, nearly unpatterned adult gaping on a trail Chris Stahl · CC BY 4.0 · iNaturalist
• Cottonmouth Agkistrodon piscivorusReddish banded individual with a dark band through the eye Dominic · CC BY 4.0 · iNaturalist
• Cottonmouth Agkistrodon piscivorusAdult coiled in defensive gape, showing the white mouth lining Geoff Gallice from Gainesville · CC BY 2.0 · Wikimedia Commons
• Cottonmouth Agkistrodon piscivorusAdult crossing a paved road at night, dark band through the eye Jolieokefenokee · CC BY 4.0 · Wikimedia Commons
• Cottonmouth Agkistrodon piscivorusHead seen from above: broad head, eyes hidden under brow scales Laura Mae · CC BY 4.0 · iNaturalist
• Couch's Spadefoot Scaphiopus couchiiCouch's spadefoot peering from its burrow; note the large bulging eyes. Gary M. Stolz, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons
• Couch's Spadefoot Scaphiopus couchiiCouch's spadefoot: greenish-yellow with dark marbling and big bulging eyes. Lon Brehmer · CC BY 4.0 · iNaturalist
• Couch's Spadefoot Scaphiopus couchii Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Coues' White-tailed Deer Odocoileus virginianus couesi Peter Chen 2.0 · CC BY 4.0 · iNaturalist
• Cougar Puma concolorHead profile showing small rounded ears and dark muzzle marks ArgentinaTurismo · CC BY 4.0 · Wikimedia Commons
• Coyote Canis latransGrizzled gray coyote standing in snow, side view of head and long legs Akr · CC BY 4.0 · iNaturalist
• Coyote Canis latransFace close-up showing large pointed ears and narrow muzzle Akr · CC BY 4.0 · iNaturalist
• Coyote Canis latransCoyote trotting across a beach past resting elephant seals avocat · CC BY 4.0 · iNaturalist
• Coyote Canis latransCoyote standing in a snowy field, looking toward the camera Gaurav Vaidya from Chapel Hill, USA · CC BY 2.0 · Wikimedia Commons
• Coyote Canis latransCoyote pup standing in a culvert pipe den Natasha Haggard · CC BY 4.0 · iNaturalist
• Coypu Myocastor coypusYoung nutria grazing on a lawn, round tail and white whiskers visible Aliya Hoff-Vanoni · CC BY 4.0 · iNaturalist
• Coypu Myocastor coypusTwo nutria nose to nose in wet grass, showing white whiskers Dan Vickers · CC BY 4.0 · iNaturalist
• Coypu Myocastor coypusNutria swimming with head raised, showing white whiskered muzzle and orange teeth Sam Kieschnick · CC BY 4.0 · iNaturalist
• Crablike Spiny Orb Weaver Gasteracantha cancriformisSpinybacked orbweaver (Gasteracantha cancriformis) underside, showing spines and yellow spots Josholith · CC BY-SA 4.0 · Wikimedia Commons
• Crablike Spiny Orb Weaver Gasteracantha cancriformisFemale spiny orb weaver: white shell, black spots and six red spines. Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Crablike Spiny Orb Weaver Gasteracantha cancriformisSpiny orb weaver at the hub of its round web. Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Crablike Spiny Orb Weaver Gasteracantha cancriformisBlack-spined form of the spiny orb weaver, with a white back. Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Crablike Spiny Orb Weaver Gasteracantha cancriformis Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Crawfish Frog Lithobates areolatus Alex · CC0 1.0 · iNaturalist
• Crescent-chested Warbler Oreothlypis superciliosa Jodhan Fine · CC0 1.0 · iNaturalist
• Crested Auklet Aethia cristatella Nigel Voaden · CC BY 4.0 · iNaturalist
• Crested Caracara Caracara cheriway audubonii James Rogers · CC BY 4.0 · iNaturalist
• Crested Caracara Caracara plancus Kent P. McFarland · CC0 1.0 · iNaturalist
• Crevice Spiny Lizard Sceloporus poinsettii Patrick Alexander from Las Cruces, NM · CC0 · Wikimedia Commons
• Crimson-collared Grosbeak Rhodothraupis celaeno Alina Martin · CC BY 4.0 · iNaturalist
• Crissal Thrasher Toxostoma crissale Bob Nieman · CC BY 4.0 · iNaturalist
• Cross Orbweaver Araneus diadematus Esin Üstün from Istanbul, Turkey · CC BY 2.0 · Wikimedia Commons
• Crotalus oreganus oreganusDark western rattlesnake with pale-edged bands, tongue out, rattle behind. Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Crotalus oreganus oreganusNorthern Pacific rattlesnake resting in a rock crevice. Parsa Fard · CC BY 4.0 · iNaturalist
• crowned hentzia jumping spider Hentzia mitrata skitterbug · CC BY 4.0 · iNaturalist
• Cryptoblepharus poecilopleurus Amy MacPherson · CC BY-SA 4.0 · iNaturalist
• Cryptobranchus alleganiensis alleganiensisHellbender sheltering under a large stream-bottom rock Brian Muckin · CC BY 4.0 · iNaturalist
• Cryptobranchus alleganiensis alleganiensisClose-up of the broad, flat head and tiny eye Evan M. Raskin · CC BY 4.0 · iNaturalist
• Cryptobranchus alleganiensis alleganiensisAdult resting on the bottom of a clear mountain stream sunny tyson · CC0 1.0 · iNaturalist
• Cryptobranchus alleganiensis alleganiensisAdult on a cobble stream bed, showing flat head and wrinkled side frills Turner Brockman · CC BY-SA 4.0 · iNaturalist
• Cuban Treefrog Osteopilus septentrionalisCuban treefrog: warty back, very large toe pads and yellow wash in the groin. Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Cuban Treefrog Osteopilus septentrionalisA yellow-green Cuban treefrog with dark blotches and banded legs on a wall. Sandra H Statner · CC BY 4.0 · iNaturalist
• Cuban Treefrog Osteopilus septentrionalis Sandra H Statner · CC BY 4.0 · iNaturalist
• Cuban Treefrog Osteopilus septentrionalisA yellow breeding male Cuban treefrog on a branch at night. Scott Allen Davis · CC BY 4.0 · iNaturalist
• Curlew Sandpiper Calidris ferruginea Nigel Voaden · CC BY 4.0 · iNaturalist
• Curve-billed Thrasher Toxostoma curvirostre celsum Joseph D Kurtz · CC BY 4.0 · iNaturalist
• Curve-billed Thrasher Toxostoma curvirostre Peter Chen 2.0 · CC BY 4.0 · iNaturalist
• Cuvier's beaked whale Ziphius cavirostris Wanax01 Charles Davies (info) · CC BY-SA 4.0 · Wikimedia Commons

D

• Dall's Porpoise Phocoenoides dalli Mike English · CC BY-SA 4.0 · iNaturalist
• Dark-eyed Junco Junco hyemalis Michael · CC BY 4.0 · iNaturalist
• Dark-legged Long-jawed Jumping Spider Hentzia palmarum Heatherelle · CC BY 4.0 · iNaturalist
• Dasymutilla gloriosaThistledown velvet ant (Dasymutilla gloriosa), long white hair, on rock colorful-corvid · CC BY 4.0 · iNaturalist
• Dasymutilla klugiiKlug's velvet ant (Dasymutilla klugii) female, black with orange abdomen Wes Copas · CC BY 4.0 · iNaturalist
• Dasymutilla vestitaDasymutilla vestita female, orange-red velvet on gravel (c) Wendy McCrady, some rights reserved (CC BY) · CC BY 4.0 · iNaturalist
• decollate snail Rumina decollata Adam Kranz · CC0 1.0 · iNaturalist
• Delta Crayfish Snake Liodytes rigida William L. Farr · CC BY-SA 4.0 · Wikimedia Commons
• Desert Grassland Whiptail Aspidoscelis uniparens CK2AZ · CC BY 4.0 · iNaturalist
• Desert Horned Lizard Phrynosoma platyrhinosDesert horned lizard on red sand, colored like the soil colorful-corvid · CC BY 4.0 · iNaturalist
• Desert Horned Lizard Phrynosoma platyrhinos Robb Hannawacker, while working for Joshua Tree National Park · Public domain · Wikimedia Commons
• Desert Iguana Dipsosaurus dorsalisClose-up of the small blunt head and white-spotted back, California. Diana · CC BY 4.0 · iNaturalist
• Desert Iguana Dipsosaurus dorsalisAdult on a flat rock: pale gray body with brown netlike markings. Joshua Tree National Park · Public domain · Wikimedia Commons
• Desert Iguana Dipsosaurus dorsalis Joshua Tree National Park · Public domain · Wikimedia Commons
• Desert Kangaroo Rat Dipodomys deserti Kyle Nessen · CC0 1.0 · iNaturalist
• Desert Kingsnake Lampropeltis splendida Court Harding · CC BY 4.0 · iNaturalist
• Desert Night Lizard Xantusia vigilis Pinnacles National Park · CC BY 4.0 · iNaturalist
• Desert Nightsnake Hypsiglena chlorophaea iNaturalist user: nmoorhatch · CC BY 4.0 · Wikimedia Commons
• Desert Recluse Loxosceles deserta Marshal Hedin from San Diego, USA · CC BY-SA 2.0 · Wikimedia Commons
• Desert Spiny Lizard Sceloporus magister Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Desert Striped Whipsnake Masticophis taeniatus taeniatus Wendy St. John · CC BY-SA 4.0 · iNaturalist
• Diamond-backed Terrapin Malaclemys terrapin Matthew Lumsden · CC BY 4.0 · iNaturalist
• Diamond-backed Water Snake Nerodia rhombifer Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Diana Fritillary Speyeria diana rashcollector · CC0 1.0 · iNaturalist
• Dickcissel Spiza americana Dan Vickers · CC BY 4.0 · iNaturalist
• Dimorphic Jumper Maevia inclemens Caitlin Domon · CC0 1.0 · iNaturalist
• Dobsonfly (eastern dobsonfly) Corydalus cornutusHellgrammite larva showing pincers, legs and side appendages Emmett Collins-Sussman · CC BY 4.0 · iNaturalist
• Dobsonfly (eastern dobsonfly) Corydalus cornutusMale with long curved tusk-like jaws resting on a window frame Grant Mullen · CC BY-SA 4.0 · iNaturalist
• Dobsonfly (eastern dobsonfly) Corydalus cornutusMale hanging from a stem among green vegetation Lisa Stevenson · CC BY 4.0 · iNaturalist
• Dobsonfly (eastern dobsonfly) Corydalus cornutusFemale from above showing short stout pincers and veined wings Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Dolichovespula arenariaCommon aerial yellowjacket on flowers, showing banded abdomen Darin J McGuire · CC BY 4.0 · iNaturalist
• Dolichovespula arenariaGray paper nest hanging in a shrub in winter, labeled common aerial yellowjacket Jonny Tostenson · CC0 1.0 · iNaturalist
• Dolomedes scriptusFemale striped fishing spider (Dolomedes scriptus) guarding her nursery web Ilona · CC BY-SA 4.0 · iNaturalist
• Domestic Cat Felis catus Sawyer Baran · CC BY 4.0 · iNaturalist
• Douglas' Squirrel Tamiasciurus douglasii Ben · CC0 1.0 · iNaturalist
• Dovekie Alle alle Ma-ludw, https://ludwig-photography.ch · CC BY-SA 4.0 · Wikimedia Commons
• Downy Woodpecker Dryobates pubescens Mirko Schoenitz · CC0 1.0 · iNaturalist
• Dunes Sagebrush Lizard Sceloporus arenicolus Sam Kieschnick · CC BY 4.0 · iNaturalist
• Dunlin Calidris alpina hudsonia Joseph D Kurtz · CC BY 4.0 · iNaturalist
• Dusky Grouse Dendragapus obscurus Craig Martin · CC0 1.0 · iNaturalist
• Dusky Pygmy Rattlesnake Sistrurus miliarius barbouriPygmy rattlesnake coiled on sandy ground with its head raised. Court Harding · CC BY 4.0 · iNaturalist
• Dusky Pygmy Rattlesnake Sistrurus miliarius barbouri Court Harding · CC BY 4.0 · iNaturalist
• Dusky Pygmy Rattlesnake Sistrurus miliarius barbouriDusky pygmy rattlesnake coiled on dead leaves, rusty spots along the back. Dan Vickers · CC BY 4.0 · iNaturalist
• Dusky Warbler Phylloscopus fuscatus Rudyard · CC BY 4.0 · iNaturalist
• Dynastes grantiiFemale Grant's Hercules beetle from above, hornless with black spots Sue Carnahan · CC BY 4.0 · iNaturalist
• Dynastes grantiiMale Grant's Hercules beetle with long thoracic horn Wendy McCrady · CC BY 4.0 · iNaturalist
• Dynastes tityusEastern Hercules beetle male, close view of thoracic and head horns Ashley Pitcher · CC0 1.0 · iNaturalist
• Dynastes tityusEastern Hercules beetle female, no horns, spotted wing covers danpatrick · CC BY 4.0 · iNaturalist
• Dynastes tityusMale eastern Hercules beetle on bare soil, spotted greenish wing covers and two horns Stosh Morency · CC BY 4.0 · iNaturalist

E

• Eared Grebe Podiceps nigricollis Diego Blanco · CC0 1.0 · iNaturalist
• Eared Grebe Podiceps nigricollis californicus Wendy St. John · CC BY-SA 4.0 · iNaturalist
• Eared Quetzal Euptilotis neoxenus nmoorhatch · CC BY 4.0 · iNaturalist
• Eastern American Toad Anaxyrus americanus americanus rintzezelle · CC BY 4.0 · iNaturalist
• Eastern American Toad Anaxyrus americanus User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Black Kingsnake Lampropeltis nigra Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Eastern Black-tailed Rattlesnake Crotalus ornatus Sam Kieschnick · CC BY 4.0 · iNaturalist
• Eastern Bluebird Sialia sialis jeffcherry · CC0 1.0 · iNaturalist
• Eastern Box Turtle Terrapene carolina carolinaBoldly marked adult partly closed up in pine needles Joshua Liverman · CC BY 4.0 · iNaturalist
• Eastern Box Turtle Terrapene carolina carolina Joshua Liverman · CC BY 4.0 · iNaturalist
• Eastern Box Turtle Terrapene carolina carolinaHead close-up with red eye and orange-blotched skin Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Eastern Box Turtle Terrapene carolina carolinaJuvenile with the shell ridge (keel) more obvious than in adults Marshall Cleveland · CC BY 4.0 · iNaturalist
• Eastern Box Turtle Terrapene carolina carolinaAdult pulling in head and legs, yellow lower shell closing up Matt Neidert · CC0 1.0 · iNaturalist
• Eastern Box Turtle Terrapene carolina carolinaAdult walking through grass and moss, showing the high domed shell Summit Metro Parks · CC BY-SA 4.0 · iNaturalist
• Eastern Cave Long-jawed Spider Meta ovalis Zachary Dankowicz · CC BY 4.0 · iNaturalist
• Eastern Chicken Turtle Deirochelys reticularia reticularia mfeaver · CC BY 4.0 · iNaturalist
• Eastern Chipmunk Tamias striatus Yann Kemper · CC0 1.0 · iNaturalist
• Eastern Coachwhip Coluber flagellum flagellum kclarksdnhmorg · CC BY 4.0 · iNaturalist
• Eastern Coachwhip Masticophis flagellumEastern coachwhip: black head and neck fading to a pale tan tail. NOAA · Public domain · Wikimedia Commons
• Eastern Coachwhip Masticophis flagellumA cornered coachwhip gapes in defence; it is not venomous. U.S. Fish and Wildlife Service Southeast Region · Public domain · Wikimedia Commons
• Eastern Collared Lizard Crotaphytus collarisBrightly coloured adult with the black double collar and large head. B. P. White · CC BY-SA 4.0 · iNaturalist
• Eastern Collared Lizard Crotaphytus collaris B. P. White · CC BY-SA 4.0 · iNaturalist
• Eastern Collared Lizard Crotaphytus collarisMale basking on granite; note the very long, round tail. Dominique Menard · CC BY 4.0 · iNaturalist
• Eastern Collared Lizard Crotaphytus collarisClose-up: large head, yellow throat and black collar bands. Jason Leduc · CC0 1.0 · iNaturalist
• Eastern Conenose (kissing bug) Triatoma sanguisugaEastern bloodsucking conenose on bark, black with orange bands along abdomen edge Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Eastern Conenose (kissing bug) Triatoma sanguisugaEastern bloodsucking conenose side view: cone-shaped head and banded abdominal edge xpda · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Coral Snake Micrurus fulviusEastern coral snake (Micrurus fulvius) on sand: red rings touch yellow, black snout Court Harding · CC BY 4.0 · iNaturalist
• Eastern Coral Snake Micrurus fulviusEastern coral snake (Micrurus fulvius) showing black snout and broad yellow head band Everglades NPS from Homestead, Florida, United States · Public domain · Wikimedia Commons
• Eastern Cottontail Sylvilagus floridanus Bernie Paquette · CC BY 4.0 · iNaturalist
• Eastern Cougar Felis concolor couguar Jeff Bartlett · CC BY 4.0 · iNaturalist
• Eastern Diamond-backed Rattlesnake Crotalus adamanteusAdult in open pine woods, head raised beside a fallen log Ashwin Srinivasan · CC BY 4.0 · iNaturalist
• Eastern Diamond-backed Rattlesnake Crotalus adamanteusJuvenile among saw palmetto, showing bold diamonds David Emmanuel · CC0 1.0 · iNaturalist
• Eastern Diamond-backed Rattlesnake Crotalus adamanteusAdult crawling on white sand, rattle and diamond pattern visible Kent P. McFarland · CC0 1.0 · iNaturalist
• Eastern Diamond-backed Rattlesnake Crotalus adamanteusHead close-up showing light-bordered dark stripe through the eye Mike Brady · CC BY 4.0 · iNaturalist
• Eastern Fence Lizard Sceloporus undulatus John Matthew Erickson · CC BY 4.0 · iNaturalist
• Eastern Fence Lizard Sceloporus undulatusAdult male on a tree trunk; note rough spiny scales and blue belly patch. Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Eastern Fence Lizard Sceloporus undulatusYoung fence lizard basking on a rock, showing rough, spiny scales. northerly · CC BY 4.0 · iNaturalist
• Eastern Fox Squirrel Sciurus niger gpete · CC BY 4.0 · iNaturalist
• Eastern Fox Squirrel Sciurus niger rufiventer Kristof Zyskowski · CC BY 4.0 · iNaturalist
• Eastern Foxsnake Pantherophis vulpinus User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Garter Snake Thamnophis sirtalis sirtalis Famartin · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Glass Lizard Ophisaurus ventralis Josiah Londerée · CC BY 4.0 · iNaturalist
• Eastern Glass Lizard Ophisaurus ventralisEastern glass lizard: older adults turn greenish with fine speckling. Semiv87 · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Glossy Swampsnake Liodytes rigida rigida Court Harding · CC BY 4.0 · iNaturalist
• Eastern Gray Squirrel Sciurus carolinensis Mila C · CC BY 4.0 · iNaturalist
• Eastern Hog-nosed Snake Heterodon platirhinosYoung eastern hognose snake coiled on a boardwalk, bright orange with dark blotches Joshua Liverman · CC BY 4.0 · iNaturalist
• Eastern Hog-nosed Snake Heterodon platirhinosEastern hognose snake playing dead: belly up, mouth open, tongue out U. S. Fish and Wildlife Service - Northeast Region · Public domain · Wikimedia Commons
• Eastern Hog-nosed Snake Heterodon platirhinosEastern hognose snake head close-up, showing the upturned snout User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Indigo Snake Drymarchon couperiAdult stretched on short grass, glossy blue-black body chloe ⋆˚꩜｡ · CC BY-SA 4.0 · iNaturalist
• Eastern Indigo Snake Drymarchon couperiHead close-up showing smooth glossy scales and reddish chin Dan Vickers · CC BY 4.0 · iNaturalist
• Eastern Indigo Snake Drymarchon corais couperi Dan Vickers · CC BY 4.0 · iNaturalist
• Eastern Indigo Snake Drymarchon couperiHead and neck in leaf litter, reddish cheeks and throat Jacqueline Raiford · CC BY 4.0 · iNaturalist
• Eastern Indigo Snake Drymarchon couperiAdult crawling across sandy ground in dry upland habitat Mount R, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons
• Eastern Kingbird Tyrannus tyrannus Laura Mae · CC BY 4.0 · iNaturalist
• Eastern Massasauga Sistrurus catenatusYoung eastern massasauga with bold blotches and a yellow button tail tip. Court Harding · CC BY 4.0 · iNaturalist
• Eastern Massasauga Sistrurus catenatusEastern massasauga head: large head plates, slit pupil, heat pit and white-edged eye stripe. User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Meadowlark Sturnella magna Laura Mae · CC BY 4.0 · iNaturalist
• Eastern Milk Snake Lampropeltis triangulumEastern milksnake coiled on rock, red black-bordered blotches and head pattern Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Eastern Milk Snake Lampropeltis triangulumBright red-and-white milksnake; each red saddle is edged in black Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Eastern Milk Snake Lampropeltis triangulumEastern milksnake in leaf litter: gray body with black-bordered brown blotches Tom Norton · CC BY 4.0 · iNaturalist
• Eastern Mud Turtle Kinosternon subrubrum Jim Moore (Maryland) · CC BY 4.0 · iNaturalist
• Eastern Mud Turtle Kinosternon subrubrum subrubrum Jim Moore (Maryland) · CC BY 4.0 · iNaturalist
• Eastern Mudsnake Farancia abacura Annika Lindqvist · CC BY 4.0 · iNaturalist
• Eastern Painted Turtle Chrysemys picta picta Greg Schechter · CC BY 2.0 · Wikimedia Commons
• Eastern Painted Turtle Chrysemys picta pictaYellow head stripes, red neck lines and red-edged shell Melissa McMasters · CC BY 4.0 · iNaturalist
• Eastern Painted Turtle Chrysemys pictaPainted turtle basking on a stump among water lilies Paul Danese · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Painted Turtle Chrysemys pictaEastern painted turtle basking on a log, scutes in straight rows with pale seams U. S. Fish and Wildlife Service - Northeast Region · Public domain · Wikimedia Commons
• Eastern Painted Turtle Chrysemys pictaBasking on a log in a duckweed-covered pond U.S. Fish and Wildlife Service Headquarters · Public domain · Wikimedia Commons
• Eastern Patch-nosed Snake Salvadora grahamiae Brandon Bourassa · CC BY 4.0 · iNaturalist
• Eastern Pinesnake Pituophis melanoleucus Alpha Wolf · CC BY 4.0 · iNaturalist
• Eastern Ratsnake Pantherophis obsoletusHead of adult showing shiny black scales and white lips, chin and throat Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Eastern Ratsnake Pantherophis obsoletusBlack rat snake head close-up: round pupil and pale lips Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Eastern Ratsnake Pantherophis obsoletusAdult climbing through thin branches, black with checkered pale belly edge Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Eastern Ratsnake Pantherophis obsoletusBlack rat snake climbing along a thin branch in forest Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Eastern Ratsnake Pantherophis obsoletusJuvenile, grey with distinct dark brown blotches, unlike the black adult Ray Fisher · CC BY 4.0 · iNaturalist
• Eastern Red Bat Lasiurus borealis Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Eastern Ribbon Snake Thamnophis sauritus sauritus Greg Schechter from San Francisco, USA · CC BY 2.0 · Wikimedia Commons
• Eastern Ribbon Snake Thamnophis sauritaEastern ribbon snake: very slender, dark body with three cream stripes. Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Ribbon Snake Thamnophis saurita Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Screech-Owl Megascops asio Chase Harris · CC0 1.0 · iNaturalist
• Eastern Six-lined Racerunner Aspidoscelis sexlineatus sexlineatus Anne Parker · CC BY 4.0 · iNaturalist
• Eastern Six-lined Racerunner Cnemidophorus sexlineatus sexlineatus Anne Parker · CC BY 4.0 · iNaturalist
• Eastern Small-footed Bat Myotis leibii Kate Kruesi · CC BY 4.0 · iNaturalist
• Eastern Spadefoot Scaphiopus holbrookii User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Eastern Spiny Softshell Apalone spiniferaSpiny softshell (Apalone spinifera) in shallow clear water over pebbles Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Eastern Spotted Whiptail Aspidoscelis gularis lwolfartist · CC BY 2.0 · Wikimedia Commons
• Eastern Tiger Salamander Ambystoma tigrinum Matt Felperin · CC BY 4.0 · iNaturalist
• Eastern Towhee Pipilo erythrophthalmus Kent P. McFarland · CC0 1.0 · iNaturalist
• Eastern Velvet Ant Dasymutilla occidentalisEastern velvet ant (Dasymutilla occidentalis), wingless female, red with black band Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Eastern Velvet Ant Dasymutilla occidentalisEastern velvet ant (Dasymutilla occidentalis) winged male on leaf litter Sam · CC BY 4.0 · iNaturalist
• Eastern Warbling-Vireo Vireo gilvus Donald Davesne · CC BY 4.0 · iNaturalist
• Eastern Worm Snake Carphophis amoenus amoenus Dominic · CC BY 4.0 · iNaturalist
• Eastern Yellow-bellied Racer Coluber constrictor flaviventrisJuvenile racer: grey-tan with reddish-brown blotches, unlike the plain adult Alex Bradley · CC BY 4.0 · iNaturalist
• Eastern Yellow-bellied Racer Coluber constrictor flaviventris Brady Reed · CC0 1.0 · iNaturalist
• Eastern Yellowjacket Vespula maculifronsEastern yellowjacket male, with long antennae, on a leaf cgmayers · CC0 1.0 · iNaturalist
• Eastern Yellowjacket Vespula maculifronsEastern yellowjacket on a leaf, chewing a small insect larva Katja Schulz · CC BY 4.0 · iNaturalist
• Elegant Tern Thalasseus elegans Riju · CC BY 4.0 · iNaturalist
• Elegant Trogon Trogon elegans Bettina Arrigoni · CC BY 2.0 · Wikimedia Commons
• Elongate Hemlock Scale Fiorinia externa Eric R. Day, Virginia Polytechnic Institute and State University · CC BY 3.0 us · Wikimedia Commons
• Emerald Ash Borer Agrilus planipennisAdult side view showing slender bullet-shaped, metallic green body Brandon McCracken · CC BY 4.0 · iNaturalist
• Emerald Ash Borer Agrilus planipennisCream-coloured flattened larva with bell-shaped segments under bark Randy A Nonenmacher · CC BY 4.0 · iNaturalist
• Emerald Ash Borer Agrilus planipennisHeavily infested ash trunk covered in winding galleries after bark loss T. J. Samojedny · CC BY 4.0 · iNaturalist
• Emerald Ash Borer Agrilus planipennisS-shaped larval gallery exposed under removed ash bark USFWS Pacific · Public domain · Wikimedia Commons
• Emerald Jumper Paraphidippus aurantius Zygy · CC0 1.0 · iNaturalist
• Emperor Goose Anser canagicus Laurel Meredyk · CC BY 4.0 · iNaturalist
• Ensatina Ensatina eschscholtzii Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Epicauta fabriciiLarge group of ashgray blister beetles (Epicauta fabricii) feeding on vines mayfly1963 · CC BY 4.0 · iNaturalist
• Epicauta fabriciiAshgray blister beetle (Epicauta fabricii), a plain gray species Robert Webster · CC BY-SA 4.0 · iNaturalist
• Epicauta pensylvanicaBlack blister beetle (Epicauta pensylvanica) side view, showing narrow neck and soft wing covers Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Epicauta vittataStriped blister beetle (Epicauta vittata) on a leaf Jason Hill · CC BY 4.0 · iNaturalist
• Epicauta vittataStriped blister beetle (Epicauta vittata) from above, two black stripes on each wing cover Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Eremobates nodularisEremobates nodularis head close-up showing the large pincer-like jaws Turner Brockman · CC BY-SA 4.0 · iNaturalist
• Eremobates nodularisEremobates nodularis holding its leg-like pedipalps out as feelers Turner Brockman · CC BY-SA 4.0 · iNaturalist
• Eremobates simoniEremobates simoni on rock, side view of jaws, pedipalps and abdomen Reid Hardin · CC BY 4.0 · iNaturalist
• Eremobates suspectusEremobates suspectus on gravel, large forward-pointing jaws and darker abdomen visible Jared Shorma · CC BY 4.0 · iNaturalist
• Eremochelis striodorsalisEremochelis striodorsalis close-up of head, eyes and jaws Toby · CC BY 4.0 · iNaturalist
• Eremocosta bajaensisEremocosta bajaensis, a pale sandy-orange camel spider, seen from above Toby · CC BY 4.0 · iNaturalist
• Euonymus scale Unaspis euonymi Ken Kneidel · CC0 1.0 · iNaturalist
• Eurasian Collared-Dove Streptopelia decaocto Laura Liedtke · CC BY 4.0 · iNaturalist
• Eurasian Dotterel Charadrius morinellus Frank Vassen from Brussels, Belgium · CC BY 2.0 · Wikimedia Commons
• Eurasian Tree Sparrow Passer montanus Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Eurasian Whimbrel Numenius phaeopus Apinanaivot · CC BY-SA 4.0 · Wikimedia Commons
• Eurasian Wigeon Mareca penelope Dan Vickers · CC BY 4.0 · iNaturalist
• Eurasian Woodcock Scolopax rusticola Jason Thompson · CC BY 2.0 · Wikimedia Commons
• European Ferret Mustela putorius Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• European Hornet Vespa crabroAdult feeding on an apple core, reddish-brown thorax and yellow abdomen Dexter Hartsfield · CC BY 4.0 · iNaturalist
• European Hornet Vespa crabroTop view on sand over a cicada: dark front, yellow rear with teardrop marks Evan M. Raskin · CC BY 4.0 · iNaturalist
• European Hornet Vespa crabroClose view of yellow abdomen with narrow dark bands and teardrop marks Louise Woodrich · CC BY 4.0 · iNaturalist
• European Hornet Vespa crabroAdult on a tree trunk at a patch of stripped bark wren-falcon · CC BY 4.0 · iNaturalist
• European Paper Wasp Polistes dominula Gavin Slater · CC BY 4.0 · iNaturalist
• European Starling Sturnus vulgaris Surly Aardvark · CC0 1.0 · iNaturalist
• European wild boar / Eurasian swine Sus scrofa scrofa Torsten Behrens from Tarbek - Segeberg - Schleswig-Holstein., Deutschland · CC BY 2.0 · Wikimedia Commons
• Eurycotis floridanaFlorida woods cockroach (Eurycotis floridana) with short wing pads, abdomen exposed Dan Vickers · CC BY 4.0 · iNaturalist
• Eurycotis floridanaFlorida woods cockroach (Eurycotis floridana), nearly black adult on a wall Sterling Herron · CC0 1.0 · iNaturalist
• Evening Grosbeak Hesperiphona vespertina Nigel Voaden · CC BY 4.0 · iNaturalist
• Eyebrowed Thrush Turdus obscurus Alastair Rae from London, United Kingdom · CC BY-SA 2.0 · Wikimedia Commons

F

• Falcated Duck Mareca falcata nmoorhatch · CC BY 4.0 · iNaturalist
• Fallow Deer Dama dama Mike Peel (www.mikepeel.net) · CC BY-SA 4.0 · Wikimedia Commons
• False Black Widow Steatoda grossa Ken Kneidel · CC0 1.0 · iNaturalist
• False Killer Whale Pseudorca crassidens NOAA Photo Library · CC BY 2.0 · Wikimedia Commons
• Fan-tailed Warbler Basileuterus lachrymosus Jodhan Fine · CC0 1.0 · iNaturalist
• Featherlegged Orbweaver Uloborus glomosus Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Feral Hog Sus scrofaMuddy feral hog running from a wallow, showing its coarse coat and tail. Cullen Hanks · CC BY 4.0 · iNaturalist
• Feral Hog Sus scrofa Cullen Hanks · CC BY 4.0 · iNaturalist
• Feral Hog Sus scrofaWild sow feeding with striped piglets beside a gravel road in Texas. Wendy McCrady · CC BY 4.0 · iNaturalist
• Feral Hog Sus scrofaPiglet with faint lengthwise stripes. Wendy McCrady · CC BY 4.0 · iNaturalist
• Feral Horse Equus caballus Patty Mitchum · CC BY 4.0 · iNaturalist
• Ferruginous Hawk Buteo regalis Brooke J · CC BY 4.0 · iNaturalist
• Ferruginous Pygmy-Owl Glaucidium brasilianum Chris (CP) and Pamela (PP) Pipes · CC0 1.0 · iNaturalist
• Fierce Orbweaver Araneus saevus xpda · CC BY-SA 4.0 · Wikimedia Commons
• Fin Whale Balaenoptera physalus Steven Lamonde · CC BY 4.0 · iNaturalist
• Fisher Pekania pennantiFisher bounding across snow, side profile with long bushy tail Cherrie Corey · CC BY 4.0 · iNaturalist
• Fisher Pekania pennantiFisher climbing down a tree trunk, looking toward the camera christine123 · CC BY 4.0 · iNaturalist
• Fishing or nursery web spider Dolomedes tritonSix-spotted fishing spider (Dolomedes triton) male standing on a pond surface elayc · CC BY 4.0 · iNaturalist
• Fishing or nursery web spider Dolomedes tritonSix-spotted fishing spider (Dolomedes triton): pale carapace edge stripes and paired white abdominal spots Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Fishing or nursery web spider Dolomedes triton Michael J. Papay · CC BY 4.0 · iNaturalist
• Five-striped Sparrow Amphispizopsis quinquestriata Dan Vickers · CC BY 4.0 · iNaturalist
• Flammulated Owl Psiloscops flammeolus Kevin Floyd · CC BY 4.0 · iNaturalist
• Flat-headed Snake Tantilla gracilis Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Flat-tailed Horned Lizard Phrynosoma mcallii kclarksdnhmorg · CC BY 4.0 · Wikimedia Commons
• Flattened Musk Turtle Sternotherus depressus John P Friel · CC BY 4.0 · iNaturalist
• Florida Cottonmouth Agkistrodon conanti Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Florida Manatee Trichechus manatus latirostrisLarge winter group gathered in shallow, warm water Lucy Keith-Diagne · CC BY 4.0 · iNaturalist
• Florida Manatee Trichechus manatus latirostris Lucy Keith-Diagne · CC BY 4.0 · iNaturalist
• Florida Manatee Trichechus manatus latirostrisMother with a small calf swimming close at her side nebrooks · CC BY 4.0 · iNaturalist
• Florida Manatee Trichechus manatus latirostrisAdult swimming near the surface, paddle tail, flipper and pale scars on back Viktor · CC BY 4.0 · iNaturalist
• Florida Panther Puma concolor coryiFlorida panther walking along a dirt road beside green vegetation Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Florida Pine Snake Pituophis melanoleucus mugitus aispinsects · CC BY 4.0 · iNaturalist
• Florida Red-bellied Cooter Pseudemys nelsoni Viktor · CC BY 4.0 · iNaturalist
• Florida Red-bellied Snake Storeria occipitomaculata obscura Laura Clark · CC BY 4.0 · iNaturalist
• Florida Sand Skink Plestiodon reynoldsi Andrew Durso · CC BY 4.0 · iNaturalist
• Florida Scrub Lizard Sceloporus woodi Bailey Duncan · CC BY 4.0 · iNaturalist
• Florida Scrub-Jay Aphelocoma coerulescens Tom Field · CC BY 4.0 · iNaturalist
• Florida Softshell Apalone feroxFlorida softshell (Apalone ferox) adult on sand, showing snorkel snout and flat shell ALAN SCHMIERER · CC0 · Wikimedia Commons
• Florida Softshell Apalone feroxFlorida softshell (Apalone ferox) head-on, showing the snorkel-like nose Everglades NPS from Homestead, Florida, United States · Public domain · Wikimedia Commons
• Florida Worm Lizard Rhineura floridana Dmitry Podobreev · CC BY 4.0 · iNaturalist
• Foldingdoor Spider Antrodiaetus unicolorFoldingdoor spider (Antrodiaetus unicolor), glossy black with brown abdomen, on a leaf John Abrams · CC BY 4.0 · iNaturalist
• Foldingdoor Spider Antrodiaetus unicolor Marshal Hedin · CC BY 2.0 · Wikimedia Commons
• Foothill Yellow-legged Frog Rana boylii Alan Rockefeller · CC BY 4.0 · iNaturalist
• Forest Sharp-tailed Snake Contia longicauda Russ Namitz · CC0 1.0 · iNaturalist
• Fork-tailed Flycatcher Tyrannus savana Adam Jackson · CC0 1.0 · iNaturalist
• Fork-tailed Storm-petrel Oceanodroma furcata steve b · CC0 1.0 · iNaturalist
• Forster's Tern Sterna forsteri sudomir · CC BY 4.0 · iNaturalist
• Fowler's Toad Anaxyrus fowleriFowler's toad: three or more warts per dark spot and a pale back stripe. Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Fowler's Toad Anaxyrus fowleri Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Fox Sparrow Passerella iliaca Troy B · CC BY 4.0 · iNaturalist
• Franklin's Gull Leucophaeus pipixcan Aaron Polichar · CC0 1.0 · iNaturalist
• Freshwater Jellyfish Craspedacusta sowerbii Zihao Wang · CC BY 4.0 · iNaturalist
• Fulvous Whistling Duck Dendrocygna bicolor Brandon Johnson · CC BY 4.0 · iNaturalist
• Furrow Orbweaver Larinioides cornutus Jesse Rorabaugh · CC0 1.0 · iNaturalist

G

• Gadwall Mareca strepera Megan Ralph · CC0 1.0 · iNaturalist
• Gambel's Quail Callipepla gambelii Peter Chen 2.0 · CC BY 4.0 · iNaturalist
• Gehyra mutilata Steve Wells · CC0 1.0 · iNaturalist
• German Yellowjacket Vespula germanica Cecil Smith · CC BY 4.0 · iNaturalist
• German Yellowjacket Vespula germanicaGerman yellowjacket resting on a weathered wooden board Flocci Nivis · CC BY 4.0 · Wikimedia Commons
• Gertsch's Triangleweaver Hyptiotes gertschi Claus Giloi · CC BY 4.0 · iNaturalist
• Giant African land snail Lissachatina fulicaDarker, worn-shelled adult crossing a sidewalk at night aross0805 · CC BY 4.0 · iNaturalist
• Giant African land snail Lissachatina fulicaSide view of shell showing pointed spire and lengthwise brown streaks Ben Keen · CC0 1.0 · iNaturalist
• Giant African land snail Lissachatina fulicaAdult crawling on pavement among leaves and plant stems Christine Melvin · CC BY 4.0 · iNaturalist
• Giant African land snail Lissachatina fulicaAdult crawling over leaf litter, showing tall conical shell with lengthwise streaks kbkash · CC0 1.0 · iNaturalist
• Giant African land snail Lissachatina fulicaSnail climbing a garden fence, showing the shell's pointed spire William Garner · CC0 1.0 · iNaturalist
• Giant Ameiva Ameiva ameiva Richard Stovall · CC BY 4.0 · iNaturalist
• Giant Desert Centipede Scolopendra herosArizona colour form: orange body with black head and tail end, on rock. Jordan Zylstra · CC BY 4.0 · iNaturalist
• Giant Desert Centipede Scolopendra herosGiant desert centipede along a wall at ground level. lanechaffin · CC0 1.0 · iNaturalist
• Giant Desert Centipede Scolopendra herosGiant desert centipede: red head, black body and yellow legs. Michelle W. （鍾偉瑋） · CC BY 4.0 · iNaturalist
• Giant Gartersnake Thamnophis gigas Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Giant Spotted Whiptail Aspidoscelis stictogrammus Cole Wolf · CC BY 4.0 · iNaturalist
• Giant Whiptail Aspidoscelis motaguae Ben Machado · CC BY 4.0 · iNaturalist
• Gila Monster Heloderma suspectumYoung Gila monster with broad black bands on red desert soil colorful-corvid · CC BY 4.0 · iNaturalist
• Gila Monster Heloderma suspectumAdult showing black net pattern on pink and a banded tail Dan Vickers · CC BY 4.0 · iNaturalist
• Gila Monster Heloderma suspectumAdult sheltering under a red sandstone ledge, tongue out Dylan C Thomas · CC0 1.0 · iNaturalist
• Gila Monster Heloderma suspectumAdult walking through desert scrub, tongue out, black and orange pattern Matt Berger · CC BY 4.0 · iNaturalist
• Gila Monster Heloderma suspectumHead-on close-up showing big black head and beadlike scales Matt Berger · CC BY 4.0 · iNaturalist
• Gila Monster Heloderma suspectumAdult walking over leaf litter beside green grass Ramsey Sullivan · CC BY 4.0 · iNaturalist
• Gila Woodpecker Melanerpes uropygialis stevemerkley · CC BY 4.0 · iNaturalist
• Glaucous Gull Larus hyperboreus Nigel Voaden · CC BY 4.0 · iNaturalist
• Glossy Crayfish Snake Regina rigida rigida Court Harding · CC BY 4.0 · iNaturalist
• Glossy Crayfish Snake Liodytes rigida William L. Farr · CC BY-SA 4.0 · Wikimedia Commons
• Glossy Ibis Plegadis falcinellus Zygy · CC0 1.0 · iNaturalist
• Glossy Snake Arizona elegans Linda Jo Conn · CC BY 4.0 · iNaturalist
• Golden Eagle Aquila chrysaetos canadensis Brooke J · CC BY 4.0 · iNaturalist
• Golden Mouse Ochrotomys nuttalli Dan Vickers · CC BY 4.0 · iNaturalist
• Golden Silk Orbweaver Trichonephila clavipesYoung female with mottled yellow, white and black abdomen Celeste Ray · CC BY 4.0 · iNaturalist
• Golden Silk Orbweaver Trichonephila clavipesFemale in her web with spotted abdomen and tufted, banded legs; small male above Dario Taraborelli · CC0 1.0 · iNaturalist
• Golden Silk Orbweaver Trichonephila clavipesYellow-abdomen female with black leg tufts, small male above her Dario Taraborelli · CC0 1.0 · iNaturalist
• Golden Silk Orbweaver Trichonephila clavipesFemale in a golden-tinted web against a wooden fence Leigha S · CC BY 4.0 · iNaturalist
• Golden-cheeked Warbler Setophaga chrysoparia Dario Taraborelli · CC0 1.0 · iNaturalist
• Golden-crowned Sparrow Zonotrichia atricapilla Millie Basden · CC BY 4.0 · iNaturalist
• Golden-fronted Woodpecker Melanerpes aurifrons Vicki Miller · CC0 1.0 · iNaturalist
• Golden-mantled Ground Squirrel Callospermophilus lateralis Lukas Zangl · CC BY 4.0 · iNaturalist
• Golden-winged Warbler Vermivora chrysoptera Andy Wilson · CC0 1.0 · iNaturalist
• Goldenrod Crab Spider Misumena vatiaGoldenrod crab spider (Misumena vatia) female, white with pink side bands, holding a bee Bernie Paquette · CC BY 4.0 · iNaturalist
• Gopher Frog Lithobates capito jakeschneider00 · CC BY-SA 4.0 · iNaturalist
• Gopher Tortoise Gopherus polyphemusAdult walking over leaf litter, showing domed shell and thick scaly front legs geosesarma · CC BY 4.0 · iNaturalist
• Gopher Tortoise Gopherus polyphemusFront view of the heavily scaled, shovel-like front legs Gerardo Chavarri · CC BY 4.0 · iNaturalist
• Gopher Tortoise Gopherus polyphemusAdult at the mouth of its sandy burrow Jade Fortnash · CC0 1.0 · iNaturalist
• Gopher Tortoise Gopherus polyphemusDark adult on pale sand with scaly digging forelegs tucked in mfeaver · CC BY 4.0 · iNaturalist
• Gopher Tortoise Gopherus polyphemusYoung tortoise with bright yellow-orange and brown shell Randy Browning/USFWS · Public domain · Wikimedia Commons
• Gophersnake Pituophis cateniferHead close-up: dark stripe through the eye and dark lip marks Arches National Park from Moab, Utah · Public domain · Wikimedia Commons
• Gophersnake Pituophis cateniferAdult crawling toward camera on a gravel road, blotched pattern visible National Park Service from USA · Public domain · Wikimedia Commons
• Gophersnake Pituophis cateniferCoiled on wood chips, showing round pupil and keeled, blotched scales National Park Service from USA · Public domain · Wikimedia Commons
• Gould's Wild Turkey Meleagris gallopavo mexicana Quinn · CC BY-SA 4.0 · iNaturalist
• Grace's Warbler Setophaga graciae Cricket Raspet · CC BY 4.0 · iNaturalist
• Graham's Crawfish Snake Regina grahamii Chad Wallis · CC BY 4.0 · Wikimedia Commons
• Grampus Grampus griseus Lucy Keith-Diagne · CC BY 4.0 · iNaturalist
• Granite Night Lizard Xantusia henshawi Trevor Van Loon · CC BY 4.0 · iNaturalist
• Granite Spiny Lizard Sceloporus orcutti Millie Basden · CC BY 4.0 · iNaturalist
• Graphic Spiny Lizard Sceloporus grammicus brendanboyd · CC BY 4.0 · iNaturalist
• Grass Spider Agelenopsis pennsylvanica D. Gordon E. Robertson · CC BY-SA 3.0 · Wikimedia Commons
• Grasshopper Sparrow Ammodramus savannarum kirk gardner · CC BY 4.0 · iNaturalist
• Grassland Crab Spider Tibellus oblongus Avery Fae · CC BY 4.0 · iNaturalist
• Gray Catbird Dumetella carolinensis Kristy Morley · CC BY 4.0 · iNaturalist
• Gray Kingbird Tyrannus dominicensis Dean Hester · CC BY 4.0 · iNaturalist
• Gray Partridge Perdix perdix msieges · CC0 1.0 · iNaturalist
• Gray Rat Snake Pantherophis spiloidesDark adult with pale skin and checkered belly showing, raised in defensive S-coil Will Brown · CC BY 2.0 · Wikimedia Commons
• Gray Rat Snake Pantherophis spiloides Will Brown · CC BY 2.0 · Wikimedia Commons
• Gray Seal Halichoerus grypus Katie Gipson · CC BY 4.0 · iNaturalist
• Gray Silky-flycatcher Ptilogonys cinereus Amado Demesa from DF, México · CC BY-SA 2.0 · Wikimedia Commons
• Gray Treefrog Dryophytes versicolorPale gray treefrog tucked on soil in December Brandon McCracken · CC BY 4.0 · iNaturalist
• Gray Treefrog Dryophytes versicolorGreen-gray treefrog on a leaf, showing pale spot under the eye and granular skin Erik Schiff · CC0 1.0 · iNaturalist
• Gray Treefrog Dryophytes versicolorTwo treefrogs on leaves, one green and one gray-brown, showing colour range Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Gray Treefrog Dryophytes versicolorCalling male on tree bark at night, throat sac inflated Michael Nerrie · CC BY 4.0 · iNaturalist
• Gray Wagtail Motacilla cinerea Tisha Mukherjee · CC BY-SA 4.0 · Wikimedia Commons
• Gray Wolf Canis lupusGray wolf standing on a snowy forest highway, side view Nick · CC0 1.0 · iNaturalist
• Gray Wolf Canis lupusGray wolf walking across open tundra gravel in Denali Robbie Hannawacker · CC0 1.0 · iNaturalist
• Gray-banded Kingsnake Lampropeltis alterna Tom Kennedy · CC BY 4.0 · iNaturalist
• Gray-crowned Rosy-Finch Leucosticte tephrocotis Nigel Voaden · CC BY 4.0 · iNaturalist
• Gray-crowned Yellowthroat Geothlypis poliocephala Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Gray-hooded Gull Chroicocephalus cirrocephalus Bill Keim · CC BY 4.0 · iNaturalist
• Gray-tailed Tattler Tringa brevipes Josiah Londerée · CC BY 4.0 · iNaturalist
• Gray’s/Black Spiny-tailed Iguana Ctenosaura similis Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Great Basin Collared Lizard Crotaphytus bicinctores Joshua Zupan · CC0 1.0 · iNaturalist
• Great Basin Fence Lizard Sceloporus occidentalis longipesClose-up of the pointed, keeled scales and blue flecks on the throat. Joshua Tree National Park · Public domain · Wikimedia Commons
• Great Basin Fence Lizard Sceloporus occidentalis longipes Millie Basden · CC BY 4.0 · iNaturalist
• Great Basin Skink Plestiodon skiltonianus utahensis Logan J.L. Bradley · CC BY 4.0 · iNaturalist
• Great Basin Spadefoot Spea intermontanaGreat Basin spadefoot: pale gray body, smooth skin and big dark eyes. RJ Baltierra · CC BY 4.0 · iNaturalist
• Great Basin spadefoot toad Spea multiplicata Matt Muir · CC BY 4.0 · iNaturalist
• Great Basin Whiptail Aspidoscelis tigris tigris Lon Brehmer · CC BY 4.0 · iNaturalist
• Great Black Hawk Buteogallus urubitinga Nick Block · CC BY 4.0 · iNaturalist
• Great Blue Heron Ardea herodiasIn flight low over water with neck folded back Daughter Dad · CC BY 4.0 · iNaturalist
• Great Blue Heron Ardea herodiasHead close-up: black eye stripe and plume, white face, yellow eye Irene · CC0 1.0 · iNaturalist
• Great Blue Heron Ardea herodiasWading at a rocky shore, striking at the water for prey mostbittern · CC BY 4.0 · iNaturalist
• Great Blue Heron Ardea herodiasAdult standing in water, slate-blue body, white face, black plume, reddish thighs Paul Danese · CC BY-SA 4.0 · Wikimedia Commons
• Great Blue Heron Ardea herodiasAdult at the nest with young showing dark crowns and no plumes Peter Chen 2.0 · CC BY 4.0 · iNaturalist
• Great Crested Flycatcher Myiarchus crinitus Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Great Crested Flycatcher Myiarchus crinitus boreus Donald Davesne · CC BY 4.0 · iNaturalist
• Great Egret Ardea alba Ben · CC0 1.0 · iNaturalist
• Great Egret Ardea alba egretta Robert Webster · CC BY-SA 4.0 · iNaturalist
• Great Gray Owl Strix nebulosa Fyn Kynd · CC BY-SA 4.0 · iNaturalist
• Great Hammerhead Sphyrna mokarranGreat hammerhead (Sphyrna mokarran) over sand, very tall pointed first dorsal fin Robin White · CC BY 4.0 · iNaturalist
• Great Hammerhead Sphyrna mokarran Stevelaycock21 · CC BY-SA 4.0 · Wikimedia Commons
• Great Horned Owl Bubo virginianus Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Great Kiskadee Pitangus sulphuratus Victor Perez Jr · CC BY 4.0 · iNaturalist
• Great Plains Earless Lizard Holbrookia maculata dconvertini · CC BY-SA 2.0 · Wikimedia Commons
• Great Plains Groundsnake Sonora episcopa Dean Hester · CC BY 4.0 · iNaturalist
• Great Plains Narrow-mouthed Toad Gastrophryne olivacea Reid Hardin · CC BY 4.0 · iNaturalist
• Great Plains Rat Snake Pantherophis emoryiGreat Plains ratsnake coiled on rock, brown blotches and spear-shaped head mark Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Great Plains Rat Snake Pantherophis emoryi Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Great Plains Skink Plestiodon obsoletus Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Great Plains Toad Anaxyrus cognatus Fyn Kynd · CC BY-SA 4.0 · iNaturalist
• Great Skua Stercorarius skua Dirk-Jan van Roest · CC BY 2.0 · Wikimedia Commons
• Great-tailed Grackle Quiscalus mexicanus Adam Jackson · CC0 1.0 · iNaturalist
• Great-winged Petrel Pterodroma macroptera JJ Harrison (https://www.jjharrison.com.au/) · CC BY-SA 3.0 · Wikimedia Commons
• Greater Earless Lizard Cophosaurus texanus Cody Stricker · CC BY 4.0 · iNaturalist
• Greater Pewee Contopus pertinax datadan · CC BY 4.0 · iNaturalist
• Greater Prairie-Chicken Tympanuchus cupido Adam Jackson · CC0 1.0 · iNaturalist
• Greater Roadrunner Geococcyx californianusAdult calling with shaggy crest raised and long tail held out Gordon Leggett · CC BY 4.0 · Wikimedia Commons
• Greater Roadrunner Geococcyx californianusHead close-up showing blue and red bare skin behind the eye Jacob Collins · CC0 1.0 · iNaturalist
• Greater Roadrunner Geococcyx californianusRunning across dry grass, body and tail stretched level Jonathan Eisen · CC BY 4.0 · iNaturalist
• Greater Roadrunner Geococcyx californianusAdult on desert rock: streaked brown plumage, long tail, heavy bill Norman Kuring · CC BY 4.0 · iNaturalist
• Greater Roadrunner Geococcyx californianusFluffed up against the cold on snow whitesandsnps · CC0 1.0 · iNaturalist
• Greater Sage-grouse Centrocercus urophasianus Jared Shorma · CC BY 4.0 · iNaturalist
• Greater Sand-Plover Charadrius leschenaultii Donald Hobern from Copenhagen, Denmark · CC BY 2.0 · Wikimedia Commons
• Greater Short-horned Lizard Phrynosoma hernandesi Bob Walker · CC BY 4.0 · iNaturalist
• Greater White-fronted Goose Anser albifrons frontalis The Vertebrate Pokédex · CC0 1.0 · iNaturalist
• Greater Yellowlegs Tringa melanoleuca Adam Jackson · CC0 1.0 · iNaturalist
• Green Anaconda Eunectes murinus MauMirror · CC BY-SA 4.0 · Wikimedia Commons
• Green and Golden Bell Frog Ranoidea aurea Froggydarb at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons
• Green Anole Anolis carolinensisBright green anole climbing a white stucco wall Donald Hobern from Copenhagen, Denmark · CC BY 2.0 · Wikimedia Commons
• Green Anole Anolis carolinensisFemale with a light stripe down the back Engers · CC BY 4.0 · iNaturalist
• Green Anole Anolis carolinensisGreen anole heading down a weathered tree trunk Everglades NPS from Homestead, Florida, United States · Public domain · Wikimedia Commons
• Green Anole Anolis carolinensisAnole in tan-brown phase on a metal railing Mgoodyear · CC BY-SA 3.0 · Wikimedia Commons
• Green Anole Anolis carolinensisMale displaying his pink throat fan (dewlap) Michael J. Papay · CC BY 4.0 · iNaturalist
• Green Anole Anolis carolinensisYoung anole, brown with a pale back stripe, on a leaf Michael J. Papay · CC BY 4.0 · iNaturalist
• green crab spider Misumessus oblongus Michelle Campbell · CC0 1.0 · iNaturalist
• Green Heron Butorides virescens Jonathan Eisen · CC BY 4.0 · iNaturalist
• Green Iguana Iguana iguanaAdult showing back spines, dewlap and the large round cheek scale. Aatu Dorochenko · CC BY-SA 4.0 · Wikimedia Commons
• Green Iguana Iguana iguana Aatu Dorochenko · CC BY-SA 4.0 · Wikimedia Commons
• Green Iguana Iguana iguanaBright green juvenile among mangroves in a Florida state park. David Garza · CC BY 4.0 · iNaturalist
• Green Iguana Iguana iguanaBreeding males fighting on a Florida patio; note the orange colour and ringed tail. Josiah Londerée · CC BY 4.0 · iNaturalist
• Green Jay Cyanocorax yncas Rosario Douglas · CC BY 4.0 · iNaturalist
• Green Kingfisher Chloroceryle americana Craig Hensley · CC BY 4.0 · iNaturalist
• Green lynx spider Peucetia viridis Layéniba · CC BY-SA 4.0 · Wikimedia Commons
• Green Mussel Perna viridis Marisa · CC BY 4.0 · iNaturalist
• Green Parakeet Psittacara holochlorus Dennis Vollmar · CC BY 4.0 · iNaturalist
• Green Rat Snake Senticolis triaspis intermedia Gordon C. Snelling · CC BY 4.0 · iNaturalist
• Green Ratsnake Senticolis triaspis ALAN SCHMIERER · CC0 · Wikimedia Commons
• Green Toad Anaxyrus debilis crseaquist · CC BY 4.0 · iNaturalist
• Green Treefrog Dryophytes cinereusGreen treefrogs can turn pale gray-brown; the white side stripe stays. Adrienne van den Beemt · CC BY 4.0 · iNaturalist
• Green Treefrog Dryophytes cinereusCalling male green treefrog with its throat sac inflated. Craig Hensley · CC BY 4.0 · iNaturalist
• Green Treefrog Dryophytes cinereusGreen treefrog: smooth bright green skin and a cream stripe along the side. lightbed · CC0 1.0 · iNaturalist
• Green-tailed Towhee Pipilo chlorurus Adam Jackson · CC0 1.0 · iNaturalist
• Green-winged Teal Anas crecca Dario Taraborelli · CC0 1.0 · iNaturalist
• Green-winged Teal Duck Anas crecca carolinensis Dario Taraborelli · CC0 1.0 · iNaturalist
• Greenhouse Frog Eleutherodactylus planirostris Rachel Crane · CC BY 4.0 · iNaturalist
• Grey-headed Swamphen Porphyrio poliocephalus Eridan Xharahi · CC BY 4.0 · iNaturalist
• Grizzly Bear Ursus arctos Annika Lindqvist · CC BY 4.0 · iNaturalist
• Ground Skink Scincella lateralis Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Ground Snake Sonora semiannulata Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Groundhog (aka Woodchuck) Marmota monax Shirley Zundell · CC BY 4.0 · iNaturalist
• Guadalupe Murrelet Synthliboramphus hypoleucus Adam Jackson · CC0 1.0 · iNaturalist
• Guinea Wasp Polistes exclamans Jesse Rorabaugh · CC0 1.0 · iNaturalist
• Gulf Coast Box Turtle Terrapene carolina major Robert Webster · CC BY-SA 4.0 · iNaturalist
• Gulf Coast Spiny Softshell Apalone spinifera aspera Dan Vickers · CC BY 4.0 · iNaturalist
• Gulf Coast Spiny Softshell Apalone spinifera asperaYoung Gulf Coast spiny softshell (Apalone spinifera aspera) with dark spots Ethan · CC BY 4.0 · iNaturalist
• Gulf Coast Tick Amblyomma maculatum CDC/ Dr. Christopher Paddock/ James Gathany · Public domain · Wikimedia Commons
• Gulf Coast Toad Incilius nebulifer Audrey Witherington · CC BY 4.0 · iNaturalist
• Gulf Saltmarsh Snake Nerodia clarkii Tom Kennedy · CC BY 4.0 · iNaturalist
• Gulf Saltmarsh Snake Nerodia clarkii clarkii Tom Kennedy · CC BY 4.0 · iNaturalist
• Gull-billed Tern Gelochelidon nilotica Laura Liedtke · CC BY 4.0 · iNaturalist
• Gyrfalcon Falco rusticolus Dan Vickers · CC BY 4.0 · iNaturalist

H

• Habronattus viridipes RL7836 · CC BY 4.0 · iNaturalist
• Hackberry Leaf Slug (White Flannel Moth) Norape ovina judygva (back in town and trying to catch up) · CC BY 2.0 · Wikimedia Commons
• Hackled-mesh Weaver Callobius bennetti Stan Rullman · CC BY 4.0 · iNaturalist
• hairy-legged vampire bat Diphylla ecaudata Justin Philbois · CC0 · Wikimedia Commons
• Hammock Spider Pityohyphantes costatus Adam Kranz · CC0 1.0 · iNaturalist
• Harbor Seal Phoca vitulina vitulina Benny Albro · CC BY 4.0 · iNaturalist
• Harbor Seal Phoca vitulina Chris Spain · CC0 1.0 · iNaturalist
• Harlequin Duck Histrionicus histrionicus Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Harp Seal Pagophilus groenlandicus Joshua Liverman · CC BY 4.0 · iNaturalist
• Harpaphe haydenianaYellow-spotted millipede (Harpaphe haydeniana) on moss, showing yellow side spots USFWS - Pacific Region · Public domain · Wikimedia Commons
• Harris's Hawk Parabuteo unicinctus Dan Vickers · CC BY 4.0 · iNaturalist
• Harris's Hawk Parabuteo unicinctus harrisi Jared Shorma · CC BY 4.0 · iNaturalist
• Hawksbill Sea Turtle Eretmochelys imbricata cello caruso-turiello · CC BY 4.0 · iNaturalist
• Heermann's Gull Larus heermanni Eric Johnson · CC BY 4.0 · iNaturalist
• Hellbender Cryptobranchus alleganiensisHeavily mottled hellbender sheltering beside a stream rock Gary Peeples / USFWS · Public domain · Wikimedia Commons
• Hemipepsis ustulataHemipepsis ustulata walking on the ground, wings raised lwolfartist · CC BY 2.0 · Wikimedia Commons
• Hemiphyllodactylus typus ian_dugdale · CC BY 4.0 · Wikimedia Commons
• Hemlock Woolly Adelgid Adelges tsugae Alan Weakley · CC0 1.0 · iNaturalist
• Henslow's Sparrow Centronyx henslowii Zihao Wang · CC BY 4.0 · iNaturalist
• Hentz Striped Scorpion Centruroides hentziHentz striped scorpion (Centruroides hentzi) on a textured wall in Florida Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Hentz Striped Scorpion Centruroides hentzi mikoikoi · CC0 1.0 · iNaturalist
• Hepatic Tanager Piranga flava Roland Godon · CC BY 4.0 · iNaturalist
• Hermit Thrush Catharus guttatus Laura Gaudette · CC BY 4.0 · iNaturalist
• Hermit Warbler Setophaga occidentalis Millie Basden · CC BY 4.0 · iNaturalist
• Hickory Tussock Moth Caterpillar Lophocampa caryaeOlder caterpillar covered in long white hairs with black dashes. Adrienne van den Beemt · CC BY 4.0 · iNaturalist
• Hickory Tussock Moth Caterpillar Lophocampa caryaeClose-up showing the shiny black head and black spots and tufts. Bernie Paquette · CC BY 4.0 · iNaturalist
• Hickory Tussock Moth Caterpillar Lophocampa caryaeWhite hairy caterpillar with a row of black tufts down the back. Will Kuhn · CC BY 4.0 · iNaturalist
• Himalayan Tahr Hemitragus jemlahicus Gurung pratap · CC BY-SA 4.0 · Wikimedia Commons
• Hoary Bat Lasiurus cinereus otiegoat · CC BY 4.0 · iNaturalist
• Hobo Spider Eratigena agrestisAdult female, side view, showing mottled abdomen and plain unbanded legs Adrian Tync · CC BY-SA 4.0 · Wikimedia Commons
• Hobo Spider Eratigena agrestisAdult female from above, showing faint abdominal chevrons and unbanded legs Adrian Tync · CC BY-SA 4.0 · Wikimedia Commons
• Hobo Spider Eratigena agrestisHobo spider resting across green plant stems outdoors David Anderson · CC BY 4.0 · iNaturalist
• Hobo Spider Eratigena agrestisJuvenile hobo spider on weathered wood Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Hogna lentaMale field wolf spider (Hogna lenta) resting on grass blades Dan Vickers · CC BY 4.0 · iNaturalist
• Hogna lentaField wolf spider (Hogna lenta) showing striped carapace and eye arrangement Rebecca Gimenez Husted · CC BY 4.0 · iNaturalist
• Holocnemus plucheiMarbled cellar spider (Holocnemus pluchei) from above, marbled abdomen and banded knees Sesamehoneytart · CC BY-SA 4.0 · Wikimedia Commons
• Holocnemus plucheiMarbled cellar spider (Holocnemus pluchei) close-up, dark central stripe on head and eye cluster Zygy · CC0 1.0 · iNaturalist
• Hooded Merganser Lophodytes cucullatus Millie Basden · CC BY 4.0 · iNaturalist
• Hooded Oriole Icterus cucullatus Guy Babineau · CC BY 4.0 · iNaturalist
• Hooded Seal Cystophora cristata Michael Bakker Paiva · CC BY 4.0 · Wikimedia Commons
• Hooded Warbler Setophaga citrina Adam Jackson · CC0 1.0 · iNaturalist
• Hooded Warbler Setophaga americana Dario Taraborelli · CC0 1.0 · iNaturalist
• Hook-billed Kite Chondrohierax uncinatus Adam Jackson · CC0 1.0 · iNaturalist
• Horn Shark Heterodontus francisci tunicatedreamz · CC BY 4.0 · iNaturalist
• Horned Grebe Podiceps auritus Claude Lyneis · CC0 1.0 · iNaturalist
• Horned Lark Eremophila alpestris Dan Vickers · CC BY 4.0 · iNaturalist
• Horned Puffin Fratercula corniculata Nigel Voaden · CC BY 4.0 · iNaturalist
• House centipede Scutigera coleoptrataAdult resting on an indoor wall Carrie Seltzer · CC BY 4.0 · iNaturalist
• House centipede Scutigera coleoptrataAdult on a metal surface, showing striped body and long banded legs David Levine from Portland, USA · CC BY 2.0 · Wikimedia Commons
• House centipede Scutigera coleoptrataClose-up of head, long antennae and dark body stripes Kyle Elshoff · CC BY 4.0 · iNaturalist
• House centipede Scutigera coleoptrataYoung house centipede on a wall, darker and with fewer legs Rupert Clayton · CC BY 4.0 · iNaturalist
• House Finch Haemorhous mexicanus frontalis Richard Littauer · CC BY 4.0 · iNaturalist
• House Finch Haemorhous mexicanus River Ahlquist · CC BY 4.0 · iNaturalist
• House Mouse Mus musculus Emily Langdon-Lassagne · CC0 1.0 · iNaturalist
• House Sparrow Passer domesticus Sandy Wolkenberg · CC BY 4.0 · iNaturalist
• House Wren Troglodytes aedon Yann Kemper · CC0 1.0 · iNaturalist
• Hudsonian Whimbrel Numenius hudsonicus sprcrkwild · CC BY 4.0 · iNaturalist
• Hutton's Vireo Vireo huttoni Brooke J · CC BY 4.0 · iNaturalist
• Hybomitra cinctaHybomitra cincta, black with a bright orange abdominal band Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Hybomitra lasiophthalmaOrange-sided horse fly female with boldly striped eyes CatherineK · CC BY-SA 4.0 · iNaturalist
• Hypanus sabinusAtlantic stingray (Hypanus sabinus) in clear shallow water over sand Chase Harris · CC0 1.0 · iNaturalist

I

• Inca Dove Columbina inca Catherine C. Galley · CC BY 4.0 · iNaturalist
• Indigo Bunting Passerina cyanea Schyler Brown · CC0 1.0 · iNaturalist
• Island Glass Lizard Ophisaurus compressusIsland glass lizard; note the eyelid and the groove along the side. Glenn Bartolotti · CC BY-SA 4.0 · Wikimedia Commons
• Island Glass Lizard Ophisaurus compressus Glenn Bartolotti · CC BY-SA 4.0 · Wikimedia Commons
• Island Gray Fox Urocyon littoralis Adam J. Searcy · CC BY 4.0 · iNaturalist
• Island Night Lizard Xantusia riversiana Tsirtalis · CC BY-SA 3.0 · Wikimedia Commons
• Island Scrub-Jay Aphelocoma insularis rainbowkitten · CC BY 4.0 · iNaturalist
• Italian Wall Lizard Podarcis siculus Sandy Wolkenberg · CC BY 4.0 · iNaturalist
• Ivory Gull Pagophila eburnea Dan Vickers · CC BY 4.0 · iNaturalist

J

• Jabiru Jabiru mycteria Gary Leavens · CC BY-SA 4.0 · Wikimedia Commons
• Jack Snipe Lymnocryptes minimus Burzawa clément PIM'S · CC BY-SA 4.0 · Wikimedia Commons
• Jackson’s Chameleon Trioceros jacksonii Nils · CC BY 4.0 · iNaturalist
• Jaguar Panthera onca Claudiarlfranco · CC BY-SA 4.0 · Wikimedia Commons
• Jamaican Giant Anole Anolis garmani Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Japanese Beetle Popillia japonicaAdult on a window screen, seen from above Cole Shoemaker · CC BY 4.0 · iNaturalist
• Japanese Beetle Popillia japonicaAdult on a leaf: metallic green head and thorax, copper wing covers, white side tufts Emmett Collins-Sussman · CC BY 4.0 · iNaturalist
• Japanese Beetle Popillia japonicaMating pair showing the row of white hair tufts along each side Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Japanese Beetle Popillia japonicaWhite C-shaped grubs with tan heads in soil Mila C · CC BY 4.0 · iNaturalist
• Japanese Beetle Popillia japonicaDense cluster of adults feeding on a flower head Violet T · CC BY 4.0 · iNaturalist
• Javan File Snake Acrochordus javanicus Rushenb · CC BY-SA 4.0 · Wikimedia Commons
• Johnson's Tufted Jumping Spider Phidippus johnsoni David Rankin · CC BY 4.0 · iNaturalist
• Joro spider Trichonephila clavataAdult female in web, showing yellow and blue-gray banded abdomen and banded legs Amit Naik · CC BY 4.0 · iNaturalist
• Joro spider Trichonephila clavataAdult female showing bold yellow and blue-gray abdominal bands and silver cephalothorax, holding prey DiegoH · CC BY 4.0 · iNaturalist
• Joro spider Trichonephila clavataYoung Joro spider in web, with yellow spots instead of adult bands Grace Merkert · CC BY 4.0 · iNaturalist
• Joro spider Trichonephila clavataAdult male: small, slender and drab tan (soft focus) northerly · CC BY 4.0 · iNaturalist
• Joro spider Trichonephila clavataAdult female side view, showing red patch and yellow-black underside pattern otiegoat · CC BY 4.0 · iNaturalist
• Juan Fernandez Petrel Pterodroma externa Christoph Moning · CC BY 4.0 · Wikimedia Commons
• jumping spider Phidippus mystaceus platycryptus · CC BY 2.0 · Wikimedia Commons
• Jumping spider Phidippus clarus Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Jumping spider (Phidippus whitmani) Phidippus whitmani Michael J. Papay · CC BY 4.0 · iNaturalist
• Juniper Titmouse Baeolophus ridgwayi Cole Wolf · CC BY 4.0 · iNaturalist

K

• Keeled Earless Lizard Holbrookia propinqua Mike Duran · CC BY 4.0 · iNaturalist
• Kentucky Warbler Geothlypis formosa Adam Jackson · CC0 1.0 · iNaturalist
• Key West Quail-Dove Ann McKenzie · CC0 1.0 · iNaturalist
• Keys bark scorpion Centruroides guanensis Turner Brockman · CC BY-SA 4.0 · iNaturalist
• Killdeer Charadrius vociferus Matt Felperin · CC BY 4.0 · iNaturalist
• Killer Whale Orcinus orca steve b · CC0 1.0 · iNaturalist
• King Eider Somateria spectabilis Dan Vickers · CC BY 4.0 · iNaturalist
• King Rail Rallus elegans Jody Shugart · CC BY 4.0 · iNaturalist
• Kirtland's Snake Clonophis kirtlandii Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Kirtland's Warbler Setophaga kirtlandii Ryan F. Mandelbaum · CC BY 4.0 · iNaturalist
• Kissing bug (Triatoma rubida) Triatoma rubidaWingless Triatoma rubida nymph with teardrop-shaped body on gravel Sam Kieschnick · CC BY 4.0 · iNaturalist
• Kissing bug (Triatoma rubida) Triatoma rubida Sue Carnahan · CC BY 4.0 · iNaturalist
• Kissing bug (Triatoma rubida) Triatoma rubidaTriatoma rubida, a southwestern species with orange abdominal edge Wendy McCrady · CC BY 4.0 · iNaturalist
• Kit Fox Vulpes macrotis Russ Namitz · CC0 1.0 · iNaturalist
• Kittlitz's Murrelet Brachyramphus brevirostris Dean Hester · CC BY 4.0 · iNaturalist
• Knight Anole Anolis equestris James Powers · CC BY-SA 4.0 · Wikimedia Commons
• Knobloch's Mountain Kingsnake Lampropeltis knoblochi Dan Riley · CC BY 4.0 · iNaturalist

L

• Labyrinth Orbweaver Metepeira labyrinthea Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Ladder-backed Woodpecker Dryobates scalaris Millie Basden · CC BY 4.0 · iNaturalist
• Lake Erie Watersnake Nerodia sipedon insularum Freya · CC BY-SA 4.0 · iNaturalist
• Lampropholis delicata Niki Robertson · CC BY 4.0 · iNaturalist
• Lanceolated Warbler Locustella lanceolata James M. Maley (jmaley) · CC BY 4.0 · Wikimedia Commons
• Lapland Longspur Calcarius lapponicus Timothy McNitt · CC BY 4.0 · iNaturalist
• Laredo Striped Whiptail Aspidoscelis laredoensis Rosario Douglas · CC BY 4.0 · iNaturalist
• Large yellow underwing Noctua pronuba Amelia Tauber · CC BY 4.0 · iNaturalist
• Large-billed Tern Phaetusa simplex Matt Felperin · CC BY 4.0 · iNaturalist
• Large-headed Anole Anolis cybotes Ben Machado · CC BY 4.0 · iNaturalist
• Lark Bunting Calamospiza melanocorys Dario Taraborelli · CC0 1.0 · iNaturalist
• Lark Sparrow Chondestes grammacus Katrina Smith · CC BY 4.0 · iNaturalist
• Lark Sparrow Chondestes grammacus strigatus Kevin Achtmeyer · CC0 1.0 · iNaturalist
• Lattice Orbweaver Araneus thaddeus Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Laughing Gull Leucophaeus atricilla Jared Shorma · CC BY 4.0 · iNaturalist
• Lawrence's Goldfinch Spinus lawrencei Lisa Mainz · CC BY 4.0 · iNaturalist
• Laysan Albatross Phoebastria immutabilis Damien Wallace · CC0 1.0 · iNaturalist
• Le Conte's Sparrow Ammospiza leconteii Dr. Andrew G. Cannizzaro · CC BY 4.0 · iNaturalist
• Le Conte's Thrasher Toxostoma lecontei Russ Namitz · CC0 1.0 · iNaturalist
• Least Auklet Aethia pusilla Nigel Voaden · CC BY 4.0 · iNaturalist
• Least Bittern Botaurus exilis Matt Felperin · CC BY 4.0 · iNaturalist
• Least Bittern Ixobrychus exilis Matt Felperin · CC BY 4.0 · iNaturalist
• Least Grebe Tachybaptus dominicus Laura Clark · CC BY 4.0 · iNaturalist
• Least Sandpiper Calidris minutilla Ben · CC0 1.0 · iNaturalist
• Lemon Shark Negaprion brevirostrisLemon shark cruising over a reef behind a black grouper Albert kok · CC BY-SA 3.0 · Wikimedia Commons
• Lemon Shark Negaprion brevirostrisAdult on sandy bottom with remora, two dorsal fins of similar size GregAmptman · CC BY 4.0 · Wikimedia Commons
• Lemon Shark Negaprion brevirostrisJuvenile in very shallow water from above, blunt rounded snout John Burnett · CC BY-SA 4.0 · iNaturalist
• Lemon Shark Negaprion brevirostrisYoung lemon shark in a shallow sandy nursery area MATHIAS, M H from Guaratinguetá, Brasil · CC BY 2.0 · Wikimedia Commons
• Lesser Brown Scorpion Isometrus maculatus Ben Keen · CC0 1.0 · iNaturalist
• Lesser Sand-Plover Charadrius mongolus Ikshan Ganpathi · CC BY-SA 4.0 · Wikimedia Commons
• Lesser Yellowlegs Tringa flavipes Craig Hensley · CC BY 4.0 · iNaturalist
• Lethocerus americanusAmerican giant water bug on pavement, flat brown body and grasping front legs Rissa Groves · CC0 1.0 · iNaturalist
• Lewis's Woodpecker Melanerpes lewis Dean Hester · CC BY 4.0 · iNaturalist
• Light-mantled Albatross Phoebetria palpebrata Antoine Lamielle · CC BY-SA 4.0 · Wikimedia Commons
• Lilac-crowned Amazon Amazona finschi Lisa Biasillo · CC BY 4.0 · iNaturalist
• Limpkin Aramus guarauna Court Harding · CC BY 4.0 · iNaturalist
• Lincoln's Sparrow Melospiza lincolnii Dan Vickers · CC BY 4.0 · iNaturalist
• Lined orbweaver Mangora gibberosa Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Lined Snake Tropidoclonion lineatum Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Lionfish Pterois volitansRed lionfish (Pterois volitans) from above, dorsal spines and pectoral fans spread Diego Delso · CC BY-SA 4.0 · Wikimedia Commons
• Lionfish Pterois milesDevil firefish (Pterois miles) head-on, showing tentacles above eyes Diego Delso · CC BY-SA 4.0 · Wikimedia Commons
• Lionfish Pterois milesDevil firefish (Pterois miles) with mouth open, fleshy tentacles above eyes and below mouth Diego Delso · CC BY-SA 4.0 · Wikimedia Commons
• Lionfish Pteropterus sphex jeyre · CC BY 4.0 · iNaturalist
• Lionfish Pterois milesJuvenile devil firefish (Pterois miles) sheltering by a rock, long fine fin rays Julien Renoult · CC BY 4.0 · iNaturalist
• Lionfish Pterois volitansRed lionfish (Pterois volitans) on a Florida reef, fins and spines spread Kristof Zyskowski · CC BY 4.0 · iNaturalist
• Little Blue Heron Egretta caerulea Brady Reed · CC0 1.0 · iNaturalist
• Little Bunting Emberiza pusilla Dan Vickers · CC BY 4.0 · iNaturalist
• Little Curlew Numenius minutus Wayne Cheng · CC BY 2.0 · Wikimedia Commons
• Little Egret Egretta garzetta Emily Turteltaub Nelson · CC BY 4.0 · iNaturalist
• Little Grass Frog Pseudacris ocularis smokeybear33 · CC0 1.0 · iNaturalist
• Little Gull Hydrocoloeus minutus Laura Gaudette · CC BY 4.0 · iNaturalist
• Little White Whiptail Aspidoscelis inornatus gypsi Isaac Krone · CC BY 4.0 · iNaturalist
• Loggerhead Musk Turtle Sternotherus minor Josiah Londerée · CC BY 4.0 · iNaturalist
• Loggerhead Sea Turtle Caretta carettaNesting female on the beach at night, shell covered in sand. Dawsey Sarah, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons
• Loggerhead Sea Turtle Caretta carettaAdult on a Florida beach at the water's edge, showing its very large head. Kristiina Hurme · CC BY 4.0 · iNaturalist
• Loggerhead Sea Turtle Caretta carettaHatchling crawling into washed-up sargassum seaweed. Shearwaters · CC BY 4.0 · iNaturalist
• Loggerhead Shrike Lanius ludovicianus ncb1221 · CC BY 4.0 · iNaturalist
• Lone Star Tick Amblyomma americanumAdult female lone star tick waiting at the edge of a leaf andrew2285 · CC0 1.0 · iNaturalist
• Lone Star Tick Amblyomma americanumAdult female on pine needles, showing the single white spot Jasper Shide · CC0 1.0 · iNaturalist
• Lone Star Tick Amblyomma americanumLone star ticks climbing a grass stem; the middle adult shows the white spot Jody · CC BY 4.0 · iNaturalist
• Lone Star Tick Amblyomma americanumClose-up of adult female: single white spot on the shield Katja Schulz · CC BY 4.0 · iNaturalist
• Long-billed Curlew Numenius americanus Dan Vickers · CC BY 4.0 · iNaturalist
• Long-billed Thrasher Toxostoma longirostre Jay Pruett · CC BY 4.0 · iNaturalist
• Long-bodied Cellar Spider Pholcus phalangioidesLongbodied cellar spider (Pholcus phalangioides) in a loose web, very long thin legs Gavin Slater · CC BY 4.0 · iNaturalist
• Long-bodied Cellar Spider Pholcus phalangioidesFemale longbodied cellar spider (Pholcus phalangioides) carrying her egg cluster in her jaws Joseph Rojas · CC BY 4.0 · iNaturalist
• Long-eared Owl Asio otus Dean Hester · CC BY 4.0 · iNaturalist
• Long-nosed Leopard Lizard Gambelia wislizenii ALAN SCHMIERER · CC0 · Wikimedia Commons
• Long-nosed Snake Rhinocheilus lecontei Patrick Alexander from Las Cruces, NM · CC0 · Wikimedia Commons
• Long-tailed Duck Clangula hyemalis carbenoid · CC BY 4.0 · iNaturalist
• Long-tailed Jaeger Stercorarius longicaudus Nigel Voaden · CC BY 4.0 · iNaturalist
• Long-tailed Weasel Mustela frenata benjchristensen · CC BY 4.0 · iNaturalist
• Long-tailed Weasel Neogale frenata johnyochum · CC BY 4.0 · iNaturalist
• Longlegged Sac Spider Cheiracanthium mildeiAdult male northern yellow sac spider (Cheiracanthium mildei) on a window frame Alan Rockefeller · CC BY 4.0 · iNaturalist
• Longlegged Sac Spider Cheiracanthium mildeiNorthern yellow sac spider (Cheiracanthium mildei) on rough stone Syrio · CC BY-SA 4.0 · Wikimedia Commons
• Louisiana Black Bear Ursus americanus luteolus USGS · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Louisiana Pinesnake Pituophis ruthveni kirk gardner · CC BY 4.0 · iNaturalist
• Louisiana Waterthrush Parkesia motacilla Adam Jackson · CC0 1.0 · iNaturalist
• Lovebug Plecia nearcticaFemale from above, smaller head and red thorax James Rogers · CC BY 4.0 · iNaturalist
• Lovebug Plecia nearcticaSeveral lovebugs gathered on goldenrod flowers Joshua Bradford · CC BY 4.0 · iNaturalist
• Lovebug Plecia nearcticaMating pair joined end to end, black bodies with red-orange thorax Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Lovebug Plecia nearcticaMating pair on a plant stem lightbed · CC0 1.0 · iNaturalist
• Lovebug Plecia nearcticaMale showing very large eyes and orange thorax willingarden · CC BY 4.0 · iNaturalist
• Lucifer Hummingbird Calothorax lucifer Christoph Moning · CC BY 4.0 · iNaturalist
• Luna moth Actias lunaClose-up of male's broad feathery antennae and eyespots Dennis White · CC0 1.0 · iNaturalist
• Luna moth Actias lunaAdult perched on a leaf, side view of furry white body Michael J. Papay · CC BY 4.0 · iNaturalist
• Luna moth Actias lunaAdult resting on pine bark, lime-green wings and long hindwing tails Michelle W. （鍾偉瑋） · CC BY 4.0 · iNaturalist
• Luna moth Actias lunaWings spread, showing an eyespot on each of the four wings Sam Kieschnick · CC BY 4.0 · iNaturalist
• Luna moth Actias lunaCaterpillar, bright green with small reddish tubercles Zachary Dankowicz · CC BY 4.0 · iNaturalist

M

• Madagascan Giant Day Gecko Phelsuma grandis Josiah Londerée · CC BY 4.0 · iNaturalist
• Madrean Alligator Lizard Elgaria kingiiMadrean alligator lizard on red rock, showing crossbands and long banded tail River Ahlquist · CC BY 4.0 · iNaturalist
• Madrean Alligator Lizard Elgaria kingiiMadrean alligator lizard head, showing black and white lip markings Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Madrean Alligator Lizard Elgaria kingii Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Magnificent Frigatebird Fregata magnificens Dean Hester · CC BY 4.0 · iNaturalist
• Magnolia Warbler Setophaga magnolia Matt Felperin · CC BY 4.0 · iNaturalist
• Mallard Anas platyrhynchos Claude Lyneis · CC0 1.0 · iNaturalist
• Mandarin Duck Aix galericulata Dani Alba · CC BY 4.0 · iNaturalist
• Mangrove Cuckoo Coccyzus minor Dan Vickers · CC BY 4.0 · iNaturalist
• Mangrove Yellow Warbler Setophaga petechia Adam Jackson · CC0 1.0 · iNaturalist
• Mantis religiosaEuropean mantis (Mantis religiosa) showing black spot on inner foreleg base OLJA · CC BY-SA 4.0 · Wikimedia Commons
• Manx Shearwater Puffinus puffinus Dan Vickers · CC BY 4.0 · iNaturalist
• Many-lined Skink Plestiodon multivirgatus Joefarah · CC BY-SA 3.0 · Wikimedia Commons
• Marbled Orbweaver Araneus marmoreusFemale marbled orbweaver (Araneus marmoreus) with yellow and black marbled abdomen Bill Keim · CC BY 4.0 · iNaturalist
• Marbled Orbweaver Araneus marmoreus Bill Keim · CC BY 4.0 · iNaturalist
• Marbled Orbweaver Araneus marmoreusMarbled orbweaver (Araneus marmoreus) orange form with mottled abdomen USFWSmidwest · Public domain · Wikimedia Commons
• Marbled Whiptail Aspidoscelis marmoratus Bob Nieman · CC BY 4.0 · Wikimedia Commons
• Marcy's Checkered Gartersnake Thamnophis marcianus marcianus Cole Wolf · CC BY 4.0 · iNaturalist
• margay Leopardus wiedii Anderson cristiano hendgen · CC BY-SA 4.0 · Wikimedia Commons
• Marsh Rabbit Sylvilagus palustris Forest Botial-Jarvis · CC BY 4.0 · iNaturalist
• Marten Martes caurina Sam Eberhard · CC BY 4.0 · iNaturalist
• Masked Duck Nomonyx dominicus Roger Rittmaster · CC BY 4.0 · iNaturalist
• Masked Tityra Tityra semifasciata Amado Demesa from DF, México · CC BY-SA 2.0 · Wikimedia Commons
• Mastigoproctus floridanusMastigoproctus floridanus from above, pincers, antenna-like legs and whip tail Daniel Estabrooks · CC0 · Wikimedia Commons
• Mastigoproctus floridanusMastigoproctus floridanus in defensive pose with pincers raised and tail up Daniel Estabrooks · CC0 · Wikimedia Commons
• Mastigoproctus giganteusMastigoproctus giganteus on wood, showing pincer-like pedipalps and thin whip tail Mathieu Roumet · CC BY 4.0 · iNaturalist
• Mastigoproctus tohonoYoung Mastigoproctus tohono with reddish pedipalps on soil Bracken Palustris · CC BY 4.0 · iNaturalist
• Mastigoproctus tohonoMastigoproctus tohono at night on bare ground, feeler legs stretched forward CK2AZ · CC BY 4.0 · iNaturalist
• Mastigoproctus tohonoMastigoproctus tohono from above, heavy pedipalps and segmented abdomen Sam Kieschnick · CC BY 4.0 · Wikimedia Commons
• Mccown's Longspur Rhynchophanes mccownii Owen Strickland · CC BY 4.0 · iNaturalist
• Mearns’ Rock Lizard Petrosaurus mearnsi Jamie Lantzy · CC BY-SA 3.0 · Wikimedia Commons
• Mediterranean Gecko Hemidactylus turcicusOn a house wall at night in Alabama, covered in small pale bumps. Djibo Zanzot · CC BY-SA 4.0 · iNaturalist
• Mediterranean Gecko Hemidactylus turcicusClose-up of the bulging lidless eye, vertical pupil and warty skin. Konstantinos Kalaentzis · CC BY-SA 4.0 · Wikimedia Commons
• Mediterranean Gecko Hemidactylus turcicus Konstantinos Kalaentzis · CC BY-SA 4.0 · Wikimedia Commons
• Mediterranean Gecko Hemidactylus turcicusNight photo in Dallas: warty, spotted body and a dark-banded tail. Stephanie Tran · CC BY 4.0 · iNaturalist
• Mediterranean Recluse Loxosceles rufescens jacilluch · CC BY-SA 2.0 · Wikimedia Commons
• Meloe americanusButtercup oil beetle (Meloe americanus), blue-black with short wing covers and swollen abdomen Rhododendrites · CC BY-SA 4.0 · Wikimedia Commons
• Mew Gull Larus brachyrhynchus Russ Namitz · CC0 1.0 · iNaturalist
• Mexican Bean Beetle Epilachna varivestis Even Dankowicz · CC BY 4.0 · iNaturalist
• Mexican Burrowing Toad Rhinophrynus dorsalis Brandon Bourassa · CC BY 4.0 · iNaturalist
• Mexican Gartersnake Thamnophis eques NS777 · CC BY-SA 4.0 · Wikimedia Commons
• Mexican Hog-nosed Snake Heterodon kennerlyiMexican hognose snake facing the camera, showing the upturned snout Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• Mexican Hog-nosed Snake Heterodon kennerlyi Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• Mexican Jay Aphelocoma wollweberi EJ Burns · CC BY 4.0 · iNaturalist
• Mexican Spiny-tailed Iguana Ctenosaura pectinata Suwanosejima · CC BY-SA 4.0 · Wikimedia Commons
• Mexican Spotted Owl Strix occidentalis lucida nmoorhatch · CC BY 4.0 · iNaturalist
• Midget Faded Rattlesnake Crotalus oreganus Don F Becker · CC0 · Wikimedia Commons
• Midland Painted Turtle Chrysemys picta marginata sudomir · CC BY 4.0 · iNaturalist
• Midland Smooth Softshell Apalone mutica muticaMidland smooth softshell (Apalone mutica mutica) basking on a log Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Midland Smooth Softshell Apalone mutica Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Midland Smooth Softshell Apalone mutica muticaAdult midland smooth softshell (Apalone mutica mutica) dug into a sandbar Eric Schmidt · CC BY 4.0 · iNaturalist
• Midland Water Snake Nerodia sipedon pleuralis Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Milk Snake Lampropeltis gentilisWestern milksnake on bare soil, orange bands bordered by black between white bands Joshua Smith · CC0 1.0 · iNaturalist
• Milk Snake Lampropeltis gentilis Tom Kennedy · CC BY 4.0 · iNaturalist
• Mink Frog Lithobates septentrionalis Bernie Paquette · CC BY 4.0 · iNaturalist
• Mississippi Diamond Back Terrapin Malaclemys terrapin pileata Jody Shugart · CC BY 4.0 · iNaturalist
• Mississippi Green Water Snake Nerodia cyclopion Stanton · CC BY-SA 4.0 · Wikimedia Commons
• Mississippi Kite Ictinia mississippiensis kcthetc1 · CC0 1.0 · iNaturalist
• Mississippi Map Turtle Graptemys pseudogeographica kohnii Sam Kieschnick · CC BY 4.0 · iNaturalist
• Mississippi Mud Turtle Kinosternon subrubrum Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Mississippi Ring-necked Snake Diadophis punctatus stictogenys Dominic · CC BY 4.0 · iNaturalist
• Mitred Parakeet Aratinga mitrata James M. Maley · CC BY 4.0 · iNaturalist
• Mohave Fringe-toed Lizard Uma scoparia Mark Pollock · CC BY 4.0 · iNaturalist
• Mohave Rattlesnake Crotalus scutulatusMojave rattlesnake coiled with rattle raised; dark tail rings narrower than pale bands. Court Harding · CC BY 4.0 · iNaturalist
• Mohave Rattlesnake Crotalus scutulatusMojave rattlesnake in a defensive coil, head raised and tongue flicking. Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• Mohave Rattlesnake Crotalus scutulatusYoung Mojave rattlesnake: wide white and narrow black tail bands. Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• Mole Kingsnake Lampropeltis calligaster rhombomaculata Marshall Cleveland · CC BY 4.0 · iNaturalist
• Mole Kingsnake Lampropeltis rhombomaculata Marshall Cleveland · CC BY 4.0 · iNaturalist
• Monarch Danaus plexippus Dave West · CC0 1.0 · iNaturalist
• Monarch Danaus plexippus plexippus Michael J. Papay · CC BY 4.0 · iNaturalist
• Monkey Slug (Hag Moth) Phobetron pithecium Donald Hobern from Copenhagen, Denmark · CC BY 2.0 · Wikimedia Commons
• Montezuma Quail Cyrtonyx montezumae Laura Liedtke · CC BY 4.0 · iNaturalist
• Moon jellyfish Aurelia aurita er-birds · CC BY 4.0 · iNaturalist
• Moorish Gecko Tarentola mauritanica Konstantinos Kalaentzis · CC BY-SA 4.0 · Wikimedia Commons
• Moose Alces alces americanaYoung bull with growing velvet antlers, showing bell and long pale legs Alan Kneidel · CC BY 4.0 · iNaturalist
• Moose Alces alcesBull moose with velvet antlers standing in tall grass beside a pond Dan Vickers · CC BY 4.0 · iNaturalist
• Moose Alces americanus Dan Vickers · CC BY 4.0 · iNaturalist
• Moose Alces alces shirasiMoose calf standing in a meadow of lupines Parker James Lloyd · CC BY 4.0 · iNaturalist
• Moose Alces alces shirasi Romain Boisseau · CC BY-SA 4.0 · iNaturalist
• Moose Alces alcesHead and shoulders of an antlerless moose, showing overhanging muzzle and bell U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons
• Moose Alces alcesAntlerless moose standing in willow thicket with snow on the ground U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons
• Mottled Duck Anas fulvigula Josiah Londerée · CC BY 4.0 · iNaturalist
• Mottled Owl Strix virgata Emily Turteltaub Nelson · CC BY 4.0 · iNaturalist
• Mottled Rock Rattlesnake Crotalus lepidus lepidus Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• Mountain Bluebird Sialia currucoides Josiah Londerée · CC BY 4.0 · iNaturalist
• Mountain Chickadee Poecile gambeli CK2AZ · CC BY 4.0 · iNaturalist
• Mountain Chickadee Poecile gambeli gambeli Joshua Smith · CC0 1.0 · iNaturalist
• Mountain Goat Oreamnos americanus GlacierNPS · Public domain · Wikimedia Commons
• Mountain Plover Anarhynchus montanus Nick Block · CC BY 4.0 · iNaturalist
• Mountain Plover Charadrius montanus Nick Block · CC BY 4.0 · iNaturalist
• Mountain Quail Oreortyx pictus Ryan Donnelly · CC BY 4.0 · iNaturalist
• Mountain Skink Plestiodon callicephalus Sue Carnahan · CC BY 4.0 · iNaturalist
• Mourning Dove Zenaida macroura froggymum · CC BY 4.0 · iNaturalist
• Mourning Warbler Geothlypis philadelphia kirk gardner · CC BY 4.0 · iNaturalist
• Mozambique Tilapia Oreochromis mossambicus Steve Wells · CC0 1.0 · iNaturalist
• Mudpuppy Necturus maculosus Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Mule Deer Odocoileus hemionus Daughter Dad · CC BY 4.0 · iNaturalist
• Muskox Ovibos moschatus Dan Vickers · CC BY 4.0 · iNaturalist
• Mute Swan Cygnus olor Laura Mae · CC BY 4.0 · iNaturalist

N

• Nanday Parakeet Nandayus nenday Adam J. Searcy · CC BY 4.0 · iNaturalist
• Narceus americanusAmerican giant millipede (Narceus americanus) climbing tree bark Grady Duffy · CC BY 4.0 · iNaturalist
• Narrow-headed Gartersnake Thamnophis rufipunctatus Vincent Plat · CC BY 4.0 · iNaturalist
• Nashville Warbler Leiothlypis ruficapilla ridgwayi Rajan Rao · CC BY 4.0 · iNaturalist
• Nashville Warbler Leiothlypis ruficapilla Zac Peterson · CC BY 4.0 · iNaturalist
• Nelson's Sharp-tailed Sparrow Ammospiza nelsoni Brandon Johnson · CC BY 4.0 · iNaturalist
• Nettle caterpillar Oxyplax pallivitta Tara Severns · CC BY 4.0 · iNaturalist
• Nevada Side-blotched Lizard Uta stansburiana nevadensis Walter A Siegmund · CC BY-SA 4.0 · iNaturalist
• New Guinea Flatworm Platydemus manokwari Sandra H Statner · CC BY 4.0 · iNaturalist
• New Mexico Gartersnake Thamnophis sirtalis dorsalis Tom Kennedy · CC BY 4.0 · iNaturalist
• New Mexico Whiptail Aspidoscelis neomexicanus Greg Schechter from San Francisco, USA · CC BY 2.0 · Wikimedia Commons
• Nile Monitor Varanus niloticusWalking toward the camera: long narrow snout and side-flattened, banded tail. AMADOU BAHLEMAN FARID · CC BY-SA 4.0 · Wikimedia Commons
• Nile Monitor Varanus niloticus AMADOU BAHLEMAN FARID · CC BY-SA 4.0 · Wikimedia Commons
• Nile Monitor Varanus niloticusWild Nile monitor in Florida with bright yellow head stripes and eyespot bands. Ben Machado · CC BY 4.0 · iNaturalist
• Nile Monitor Varanus niloticusAdult on a termite mound in Uganda, showing rows of yellow eyespots. Giles Laurent · CC BY-SA 4.0 · Wikimedia Commons
• nilgai Boselaphus tragocamelus steve b · CC0 1.0 · iNaturalist
• Nine-banded Armadillo Dasypus novemcinctus mexicanus Melissa Meadows · CC BY 4.0 · iNaturalist
• North American Deermouse Peromyscus maniculatus Charlie Pavlisich · CC BY 4.0 · iNaturalist
• North American River Otter Lontra canadensis Adam Jackson · CC0 1.0 · iNaturalist
• North Atlantic Right Whale Eubalaena glacialis NOAA Photo Library · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Northern Alligator Lizard Elgaria coeruleaNorthern alligator lizard basking on a log under leaves Ruth Lozza · CC BY-SA 4.0 · iNaturalist
• Northern Alligator Lizard Elgaria coeruleaNorthern alligator lizard, showing square scales, side fold and brown eye USFWS - Pacific Region · Public domain · Wikimedia Commons
• Northern Alligator Lizard Elgaria coerulea USFWS - Pacific Region · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Northern Black Racer Coluber constrictor constrictorHead and neck: glossy black smooth scales and large eye Dilrukshan Priyantha Wijesinghe · CC BY 4.0 · iNaturalist
• Northern Black Racer Coluber constrictor constrictor Kristof Zyskowski & Yulia Bereshpolova · CC BY 2.0 · Wikimedia Commons
• Northern Black Widow Latrodectus variolusNorthern black widow (Latrodectus variolus) female among pine needles and leaf litter Evan Feusi · CC0 1.0 · iNaturalist
• Northern Black Widow Latrodectus variolusNorthern black widow (Latrodectus variolus) showing red spots on top of abdomen Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Northern Black Widow Latrodectus variolus Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Northern Black Widow Latrodectus variolusYoung male northern black widow (Latrodectus variolus) with orange and white abdominal stripes Ray Fisher · CC BY 4.0 · iNaturalist
• Northern Bobwhite Colinus virginianus Laura Mae · CC BY 4.0 · iNaturalist
• Northern Cardinal Cardinalis cardinalisFledgling, plain brown with a dark bill Ali Powell · CC BY 4.0 · iNaturalist
• Northern Cardinal Cardinalis cardinalisRed male passing food to a tan female on mulch Daughter Dad · CC BY 4.0 · iNaturalist
• Northern Cardinal Cardinalis cardinalisAdult male taking off, showing crest, black mask and red bill Michael · CC BY 4.0 · iNaturalist
• Northern Cardinal Cardinalis cardinalisAdult female: tan body, reddish wings and tail, red bill northerly · CC BY 4.0 · iNaturalist
• Northern Coal Skink Plestiodon anthracinus anthracinus er-birds · CC BY 4.0 · iNaturalist
• Northern Cottonmouth Agkistrodon piscivorus Jolieokefenokee · CC BY 4.0 · Wikimedia Commons
• Northern Crab Spider Mecaphesa asperata Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Northern Curly-tailed Lizard Leiocephalus carinatusAdult female in Miami with the tightly curled, dark-banded tail. Jean Martins · CC BY 4.0 · iNaturalist
• Northern Curly-tailed Lizard Leiocephalus carinatusAdult male in Miami, showing the heavy keeled scales and low crest. Jean Martins · CC BY 4.0 · iNaturalist
• Northern Curly-tailed Lizard Leiocephalus carinatusAdult on a pine branch, tail curled up over the back. Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Northern Curly-tailed Lizard Leiocephalus carinatus Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Northern Desert Nightsnake Hypsiglena chlorophaea deserticola Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• Northern Diamond-Backed Watersnake Nerodia rhombifer Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Northern Diamondback Terrapin Malaclemys terrapin terrapin Zihao Wang · CC BY 4.0 · iNaturalist
• Northern Elephant Seal Mirounga angustirostris Garth Harwood · CC BY 4.0 · iNaturalist
• Northern Fence Lizard Sceloporus undulatus John Matthew Erickson · CC BY 4.0 · iNaturalist
• Northern Flicker Colaptes auratus Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Northern Fur-seal Callorhinus ursinus Nigel Voaden · CC BY 4.0 · iNaturalist
• Northern Gannet Morus bassanus Brooke J · CC BY 4.0 · iNaturalist
• Northern Harrier Circus hudsonius Jonathan Eisen · CC BY 4.0 · iNaturalist
• Northern Hawk Owl Surnia ulula Laurel Meredyk · CC BY 4.0 · iNaturalist
• Northern Lapwing Vanellus vanellus Clay Gibbons · CC BY 4.0 · iNaturalist
• Northern leopard frog Lithobates pipiens Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Northern Leopard Frog Lithobates pipiensNorthern leopard frog from above: large round spots edged in pale rings. Colin Croft · CC BY 4.0 · iNaturalist
• Northern Long-toothed Sheetweaver Drapetisca alteranda Bruce Marlin · CC BY 3.0 · Wikimedia Commons
• Northern Many-lined Skink Plestiodon multivirgatus B. P. White · CC BY-SA 4.0 · Wikimedia Commons
• Northern Mockingbird Mimus polyglottos Bill Keim · CC BY 4.0 · iNaturalist
• Northern Mockingbird Mimus polyglottos leucopterus Nancy Overholtz · CC BY-SA 4.0 · iNaturalist
• Northern Mole Skink Plestiodon egregius Glenn Bartolotti · CC BY-SA 4.0 · Wikimedia Commons
• Northern Pine Snake Pituophis melanoleucus melanoleucusClose view of a coiled pine snake with reddish-brown blotches on cream. Alpha Wolf · CC BY 4.0 · iNaturalist
• Northern Pine Snake Pituophis melanoleucus melanoleucus Alpha Wolf · CC BY 4.0 · iNaturalist
• Northern Pine Snake Pituophis melanoleucus melanoleucusNorthern pine snake: black blotches, heavy near the head, clearer toward the tail. Scott Ward · CC BY 4.0 · iNaturalist
• Northern Pine Snake Pituophis melanoleucus melanoleucusHead view: pointed snout with a large snout scale; ridged body scales. Scott Ward · CC BY 4.0 · iNaturalist
• Northern Pintail Anas acuta Matt Felperin · CC BY 4.0 · iNaturalist
• Northern Pygmy Owl Glaucidium gnoma Don Wellmann · CC0 1.0 · iNaturalist
• Northern Red-bellied Cooter Pseudemys rubriventris Joshua Liverman · CC BY 4.0 · iNaturalist
• Northern Red-bellied Snake Storeria occipitomaculata occipitomaculataRed-bellied snake basking on a rock: brown back stripe, grey sides. Clay Gibbons · CC BY 4.0 · iNaturalist
• Northern Red-bellied Snake Storeria occipitomaculata occipitomaculataThe plain, bright red-orange belly that gives the snake its name. Clay Gibbons · CC BY 4.0 · iNaturalist
• Northern Red-bellied Snake Storeria occipitomaculata occipitomaculata Clay Gibbons · CC BY 4.0 · iNaturalist
• Northern Red-bellied Snake Storeria occipitomaculata Clay Gibbons · CC BY 4.0 · iNaturalist
• Northern Red-bellied Snake Storeria occipitomaculataHead close-up: pale neck spot and white spot on the upper lip. Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Northern Red-legged Frog Rana aurora Mandy Hackney · CC BY 4.0 · iNaturalist
• Northern Ribbonsnake Thamnophis saurita septentrionalisNorthern ribbon snake swimming through a pond with floating plants. Todd Eiben · CC0 1.0 · iNaturalist
• Northern Right-whale Dolphin Lissodelphis borealis Credit: NOAA NMFS · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Northern Ring-necked Snake Diadophis punctatusRingneck snake: grey back, orange neck ring, spotted orange-to-red belly. Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Northern Ring-necked Snake Diadophis punctatusHead close-up: the pale orange ring right behind the dark head. Sam Kieschnick · CC BY 4.0 · iNaturalist
• Northern Ring-necked Snake Diadophis punctatus edwardsii Sinéad Tuttle-Lerner · CC BY 4.0 · iNaturalist
• Northern Ring-necked Snake Diadophis punctatus edwardsii Sinéad Tuttle-Lerner · CC BY 4.0 · iNaturalist
• Northern Rough Green Snake Opheodrys aestivus aestivus John Matthew Erickson · CC BY 4.0 · iNaturalist
• Northern Rough Greensnake Opheodrys aestivusRough green snake climbing through shrub branches. Daniel McNair · CC BY 4.0 · iNaturalist
• Northern Rough Greensnake Opheodrys aestivus John Matthew Erickson · CC BY 4.0 · iNaturalist
• Northern Rough Greensnake Opheodrys aestivusRough green snake crossing a gravel road with its head raised high. Joshua Liverman · CC BY 4.0 · iNaturalist
• Northern Rough Greensnake Opheodrys aestivusRough green snake close-up: plain green body, large eye, cream lips. Joshua Liverman · CC BY 4.0 · iNaturalist
• Northern Rubber Boa Charina bottae Ajaykuyiloor · CC BY-SA 3.0 · Wikimedia Commons
• Northern Rubber Boa Charina bottaeRubber boa coiled on pine bark near the Stehekin River, Washington. NPS Staff · Public domain · Wikimedia Commons
• Northern Rubber Boa Charina bottaeRubber boa coiled on a weathered board, head out front. Parsa Fard · CC BY 4.0 · iNaturalist
• Northern Rubber Boa Charina bottaeRubber boa head: small eye with vertical pupil and tiny smooth scales. Parsa Fard · CC BY 4.0 · iNaturalist
• Northern Sagebrush Lizard Sceloporus graciosus graciosus zookanthos · CC BY 4.0 · iNaturalist
• Northern Saw-whet Owl Aegolius acadicus acadicus Richard Littauer · CC BY 4.0 · iNaturalist
• Northern Saw-whet Owl Aegolius acadicus Rudyard · CC BY 4.0 · iNaturalist
• Northern Scarlet Snake Cemophora coccinea copei Lauren McLaurin · CC BY 4.0 · iNaturalist
• Northern Shoveler Spatula clypeata Dan Vickers · CC BY 4.0 · iNaturalist
• Northern Spring Peeper Pseudacris cruciferSpring peeper: tiny tan frog with a dark X on the back and barred legs. Christine Young · CC BY 4.0 · iNaturalist
• Northern Spring Peeper Pseudacris cruciferFrom behind, the namesake X across the back is easy to see. Christine Young · CC BY 4.0 · iNaturalist
• Northern Spring Peeper Pseudacris cruciferAdult female spring peeper on a gravel road at night, X clearly visible. Robert Harris · CC BY 4.0 · iNaturalist
• Northern Three-lined Boa Lichanura orcutti RJ Baltierra · CC BY 4.0 · iNaturalist
• Northern Tree Lizard Urosaurus ornatus Jason Leduc · CC0 1.0 · iNaturalist
• Northern Water Snake Nerodia sipedon sipedon Adrienne van den Beemt · CC BY 4.0 · iNaturalist
• Northern Waterthrush Parkesia noveboracensis carbenoid · CC BY 4.0 · iNaturalist
• Northern Wheatear Oenanthe oenanthe Ryan F. Mandelbaum · CC BY 4.0 · iNaturalist
• Northern Yellow Warbler Setophaga aestiva Mirko Schoenitz · CC0 1.0 · iNaturalist
• Northwestern Gartersnake Thamnophis ordinoides Matt D'Agrosa · CC BY 4.0 · iNaturalist
• Nurse Shark Ginglymostoma cirratumClose side view of the head showing a nostril barbel and small eye Jakob Owens jakobowens1 · CC0 · Wikimedia Commons
• Nurse Shark Ginglymostoma cirratumNurse shark resting on the reef floor, nostril barbels and rounded dorsals visible Matteo Bellucci · CC BY 4.0 · iNaturalist
• Nurse Shark Ginglymostoma cirratumResting on sand under a reef ledge, first dorsal set far back Photographer: Florida Keys National Marine Sanctuary Staff · Public domain · Wikimedia Commons
• Nursery Web Spider Pisaurina mira Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Nutmeg Mannikin Lonchura punctulata Laura Liedtke · CC BY 4.0 · iNaturalist
• Nuttall's Woodpecker Dryobates nuttallii Jonathan Eisen · CC BY 4.0 · iNaturalist

O

• Oceanic Whitetip Shark Carcharhinus longimanus Alexander Vasenin · CC BY-SA 4.0 · Wikimedia Commons
• Ocellated Skink Chalcides ocellatus Kikku33 · CC BY-SA 4.0 · Wikimedia Commons
• Ocelot Leopardus pardalis Tom Smylie · Public domain · Wikimedia Commons
• Ogre-faced spider Deinopis spinosa Amber M. King · CC BY 4.0 · iNaturalist
• Olios giganteusGiant crab spider (Olios giganteus), a western huntsman, on a window frame Sam Kieschnick · CC BY 4.0 · iNaturalist
• Olios giganteusAdult male giant crab spider (Olios giganteus), orange with enlarged palps Toby · CC BY 4.0 · iNaturalist
• Olive Sparrow Arremonops rufivirgatus Don Wellmann · CC0 1.0 · iNaturalist
• Olive Warbler Peucedramus taeniatus Dean Hester · CC BY 4.0 · iNaturalist
• Olive-backed Pipit Anthus hodgsoni Adam Jackson · CC0 1.0 · iNaturalist
• Opossum Didelphis virginianaOpossum peering out from tree branches, showing white face and black ears Diana Foreman · CC0 1.0 · iNaturalist
• Opossum Didelphis virginianaOpossum climbing a tree branch, gripping with bare pink feet Diana Foreman · CC0 1.0 · iNaturalist
• Opossum Didelphis virginianaOpossum walking on snow, showing grizzled gray fur and long scaly tail Shirley Zundell · CC BY 4.0 · iNaturalist
• Orange-belted Bumble Bee Bombus ternarius rintzezelle · CC BY 4.0 · iNaturalist
• Orange-billed Nightingale-Thrush Catharus aurantiirostris Cephas · CC BY-SA 4.0 · Wikimedia Commons
• Orange-Striped Ribbonsnake Thamnophis proximus Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Orange-throated Whiptail Aspidoscelis hyperythrus Eric Klug · CC BY 4.0 · iNaturalist
• Orchard Oriole Icterus spurius Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Orchard Spider Leucauge venusta Katja Schulz · CC BY 4.0 · iNaturalist
• Oriental Beetle Exomala orientalis Katja Schulz · CC BY 4.0 · iNaturalist
• Oriental Turtle-Dove Streptopelia orientalis Rajan Rao · CC BY 4.0 · iNaturalist
• Ornate Box Turtle Terrapene ornata Archer Silverman · CC BY 4.0 · iNaturalist
• Ornate Chorus Frog Pseudacris ornata Scott Allen Davis · CC BY 4.0 · iNaturalist
• Oryx Oryx gazella nmoorhatch · CC BY 4.0 · iNaturalist
• Oscar Astronotus ocellatus botanygirl · CC BY 4.0 · iNaturalist
• Osprey Pandion haliaetus Alina Martin · CC BY 4.0 · iNaturalist
• Osprey Pandion haliaetus carolinensis Ben · CC0 1.0 · iNaturalist
• Ovenbird Seiurus aurocapilla Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Oxidus gracilisGreenhouse millipede (Oxidus gracilis), a small brown species often found around homes Syrio · CC BY-SA 4.0 · Wikimedia Commons

P

• Pacific Golden Plover Pluvialis fulva James M. Maley · CC BY 4.0 · iNaturalist
• Pacific Loon Gavia adamsii Adam Jackson · CC0 1.0 · iNaturalist
• Pacific Loon Gavia pacifica Nigel Voaden · CC BY 4.0 · iNaturalist
• Pacific White-sided Dolphin Lagenorhynchus obliquidens Robert Webster · CC BY-SA 4.0 · iNaturalist
• Pacific-slope Flycatcher Empidonax difficilis Matt Felperin · CC BY 4.0 · iNaturalist
• Paint-billed Crake Neocrex erythrops Hector Bottai · CC BY-SA 4.0 · Wikimedia Commons
• Painted Bunting Passerina ciris pallidior Dan Vickers · CC BY 4.0 · iNaturalist
• Painted Redstart Myioborus pictus Sam Kieschnick · CC BY 4.0 · iNaturalist
• Palm Warbler Setophaga palmarum Andy Wilson · CC0 1.0 · iNaturalist
• Panamint Rattlesnake Crotalus stephensi Holger Krisp · CC BY 3.0 · Wikimedia Commons
• Panther Cameleon Furcifer pardalis Diego Delso · CC BY-SA 4.0 · Wikimedia Commons
• Pantropical Jumping Spider Plexippus paykulliMale pantropical jumping spider (Plexippus paykulli): dark bands with a pale central stripe dhasdf · CC BY 4.0 · iNaturalist
• Pantropical Jumping Spider Plexippus paykulli spidereyes · CC0 1.0 · iNaturalist
• Parakeet Auklet Aethia psittacula Ingvild Riska · CC BY 4.0 · iNaturalist
• Parasitic Cobweb Spider Neospintharus trigonum Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Parasitic Jaeger Stercorarius parasiticus Fyn Kynd · CC BY-SA 4.0 · iNaturalist
• Paratriatoma lecticulariaLecticularia conenose from above, reddish-brown with banded abdomen edge Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Parson Spider Herpyllus ecclesiasticus Even Dankowicz · CC BY 4.0 · iNaturalist
• Pectoral Sandpiper Calidris melanotos Dan Vickers · CC BY 4.0 · iNaturalist
• Pelagic Cormorant Phalacrocorax pelagicus John Matthew Erickson · CC BY 4.0 · iNaturalist
• Pelagic stingray Pteroplatytrygon violacea Diego Delso · CC BY-SA 4.0 · Wikimedia Commons
• Pelagic thresher shark Alopias pelagicus Pierre Pericard · CC BY 4.0 · Wikimedia Commons
• Peloncillo Scorpion Diplocentrus peloncillensis Tom Kennedy · CC BY 4.0 · iNaturalist
• Peninsula Leaf-toed Gecko Phyllodactylus nocticolus Madeleine Claire · CC BY 4.0 · iNaturalist
• Pepsis grossaMale Pepsis grossa with straight antennae among low plants Wendy McCrady · CC BY 4.0 · iNaturalist
• Pepsis grossaPepsis grossa on a plant stem, iridescent blue body and orange wings xpda · CC BY-SA 4.0 · Wikimedia Commons
• Pepsis mildeiPepsis mildei on milkweed, orange-brown wings and orange antennae David Rankin · CC BY 4.0 · iNaturalist
• Pepsis thisbePepsis thisbe on milkweed flowers, blue-black body and bright orange wings ALAN SCHMIERER · CC0 · Wikimedia Commons
• Pepsis thisbeFemale Pepsis thisbe showing curled antennae and smoky wing margins Kylie Etter · CC BY 4.0 · iNaturalist
• Peregrine Falcon Falco peregrinus Shirley Zundell · CC BY 4.0 · iNaturalist
• Periplaneta americanaAmerican cockroach (Periplaneta americana) on a brick house wall Bracken Palustris · CC BY 4.0 · iNaturalist
• Periplaneta americanaAmerican cockroach (Periplaneta americana) adult with pale-edged head shield Steve Kerr · CC BY 4.0 · iNaturalist
• Peter's Rock Agama Agama picticauda gpete · CC BY 4.0 · Wikimedia Commons
• Phainopepla Phainopepla nitens kendalloei · CC BY 4.0 · iNaturalist
• Phainopepla Phainopepla nitens lepida Kevin Achtmeyer · CC0 1.0 · iNaturalist
• Philadelphia Vireo Vireo philadelphicus Bob Nieman · CC BY 4.0 · iNaturalist
• Pickerel Frog Lithobates palustrisPickerel frog: two rows of squarish dark spots between pale back ridges. Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Pickerel Frog Lithobates palustris Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Pickerel Frog Rana palustris Ken Clark · CC BY 4.0 · iNaturalist
• Pickerel Frog Lithobates palustrisSide view: squarish spots and a plain eardrum without a white center. skitterbug · CC BY 4.0 · iNaturalist
• Pickerel Frog Lithobates palustrisBright orange on the hidden inside of the hind leg, a pickerel frog mark. the swamp ass · CC BY 4.0 · iNaturalist
• Pigeon Guillemot Cepphus columba avocat · CC BY 4.0 · iNaturalist
• Pigmy Rattlesnake Sistrurus miliariusPygmy rattlesnake head: black stripe edged in white behind the eye. Jolieokefenokee · CC BY 4.0 · Wikimedia Commons
• Pike slender jumper Marpissa pikei spidereyes · CC0 1.0 · iNaturalist
• Pileated Woodpecker Dryocopus pileatus Joe Brewer · CC BY 4.0 · iNaturalist
• Pine Barrens Treefrog Dryophytes andersonii Matthew Lumsden · CC BY 4.0 · iNaturalist
• Pine Grosbeak Pinicola enucleator montana Archer Silverman · CC BY 4.0 · iNaturalist
• Pine Grosbeak Pinicola enucleator Richard Littauer · CC BY 4.0 · iNaturalist
• Pine Siskin Spinus pinus Adam Jackson · CC0 1.0 · iNaturalist
• Pine Warbler Setophaga pinus Dan Vickers · CC BY 4.0 · iNaturalist
• Pine Woods Littersnake Rhadinaea flavilata Josiah Londerée · CC BY 4.0 · iNaturalist
• Pink-footed Shearwater Puffinus creatopus Cricket Raspet · CC BY 4.0 · iNaturalist
• Piping Plover Charadrius melodus Becca · CC BY 4.0 · iNaturalist
• Piping Plover Charadrius melodus circumcinctus Becca · CC BY 4.0 · iNaturalist
• Pituophis catenifer annectensTwo adults lying together on a sidewalk Millie Basden · CC BY 4.0 · iNaturalist
• Pituophis catenifer cateniferJuvenile in grass and clover, looking like a small adult Justin · CC BY 4.0 · iNaturalist
• Pituophis catenifer sayiBullsnake climbing a pine trunk into a tree cavity, banded tail visible Anders Hastings · CC BY 4.0 · iNaturalist
• Pituophis catenifer sayiHead and forebody showing black eye-to-jaw line and barred upper lip Cephas · CC BY-SA 4.0 · Wikimedia Commons
• Pituophis catenifer sayiBullsnake climbing between twin tree trunks above water NPS/Jim Peaco · Public domain · Wikimedia Commons
• Pituophis catenifer sayiBullsnake raiding swallow mud nests under a roof, blotched pattern visible Rory O'Shea · CC BY 4.0 · iNaturalist
• Plain Chachalaca Ortalis vetula Dan Vickers · CC BY 4.0 · iNaturalist
• Plain-capped Starthroat Heliomaster constantii RJ Baltierra · CC BY 4.0 · iNaturalist
• Plains Box Turtle Terrapene ornata ornata Jacob Friend · CC0 1.0 · iNaturalist
• Plains Gartersnake Thamnophis radixPlains garter snake coiled in grass, orange back stripe and yellow side stripes Photo Credit: Krista Lundgren/USFWS USFWS Mountain-Prairie · Public domain · Wikimedia Commons
• Plains Gartersnake Thamnophis radix Stanton · CC BY-SA 4.0 · Wikimedia Commons
• Plains Hog-nosed Snake Heterodon nasicusPlains (western) hognose snake coiled on sand, upturned snout and dark blotches Dean Hester · CC BY 4.0 · iNaturalist
• Plains Hog-nosed Snake Heterodon nasicus Dean Hester · CC BY 4.0 · iNaturalist
• Plains Leopard Frog Lithobates blairiBrown plains leopard frog with a light spot on the eardrum. Sam Kieschnick · CC BY 4.0 · Wikimedia Commons
• Plateau Fence Lizard Sceloporus tristichus Robbie Hannawacker · CC0 1.0 · iNaturalist
• Plateau Striped Whiptail Aspidoscelis velox Lon Brehmer · CC BY 4.0 · iNaturalist
• Plumbeous Vireo Vireo plumbeus tcantrell52 · CC BY 4.0 · iNaturalist
• Polar Bear Ursus maritimus Dan Vickers · CC BY 4.0 · iNaturalist
• Pomarine Jaeger Stercorarius pomarinus Nigel Voaden · CC BY 4.0 · iNaturalist
• Portuguese Man-of-War Physalia physalis Tom Kennedy · CC BY 4.0 · iNaturalist
• Prairie Falcon Falco mexicanus Sue Carnahan · CC BY 4.0 · iNaturalist
• Prairie Kingsnake Lampropeltis calligaster Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Prairie Racerunner Aspidoscelis sexlineata viridis Dominic · CC BY 4.0 · iNaturalist
• Prairie Racerunner Aspidoscelis sexlineatus viridis Dominic · CC BY 4.0 · iNaturalist
• Prairie Rattlesnake Crotalus viridisPrairie rattlesnake coiled under sagebrush in Wyoming, rattle visible. Cecelia Alexander · CC0 1.0 · iNaturalist
• Prairie Rattlesnake Crotalus viridisPrairie rattlesnake head: dark eye bar bordered by pale stripes. Daniel S. Katz · CC BY 4.0 · iNaturalist
• Prairie Rattlesnake Crotalus viridisPrairie rattlesnake close-up: broad head, heat pit and pale facial stripes. Nick Tobler (Cowturtle) · CC BY 4.0 · iNaturalist
• Prairie Rattlesnake Crotalus viridis Patrick Alexander from Las Cruces, NM · CC0 · Wikimedia Commons
• Prairie Ring-Necked Snake Diadophis punctatus Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Prairie Skink Plestiodon septentrionalis Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Prairie Warbler Setophaga discolor Fyn Kynd · CC BY-SA 4.0 · iNaturalist
• Pronghorn Antilocapra americana Dean Hester · CC BY 4.0 · iNaturalist
• Pronghorn Antilocapra americana americana Matthew Gerke · CC BY 4.0 · iNaturalist
• Puma concolor couguarMountain lion stepping down from a yard wall in a Colorado neighborhood Jared Shorma · CC BY 4.0 · iNaturalist
• Puma concolor couguarMountain lion walking toward camera, long black-tipped tail visible Jeff Bartlett · CC BY 4.0 · iNaturalist
• Puma concolor couguarMountain lion standing at the edge of dense green vegetation, side view Jeff Bartlett · CC BY 4.0 · iNaturalist
• Purple Gallinule Porphyrio martinica Josiah Londerée · CC BY 4.0 · iNaturalist
• Purple Sandpiper Calidris maritima Dominic · CC BY 4.0 · iNaturalist
• Puss Caterpillar (Southern Flannel Moth) Megalopyge opercularisGrayish-brown caterpillar on tree bark, showing hair tail dhasdf · CC BY 4.0 · iNaturalist
• Puss Caterpillar (Southern Flannel Moth) Megalopyge opercularisCaterpillar feeding on a leaf, pale coat with rusty-tipped hair Iose · Public domain · Wikimedia Commons
• Puss Caterpillar (Southern Flannel Moth) Megalopyge opercularisAdult moth showing wavy white scales on yellow forewing Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Puss Caterpillar (Southern Flannel Moth) Megalopyge opercularisAdult southern flannel moth from above, furry with orange thorax kcthetc1 · CC0 1.0 · iNaturalist
• Puss Caterpillar (Southern Flannel Moth) Megalopyge opercularisCaterpillar: teardrop-shaped tan hair coat tapering to a tail Sue Carnahan · CC BY 4.0 · iNaturalist
• Pygmy Short-horned Lizard Phrynosoma douglasii Walter Siegmund (talk) · CC BY-SA 3.0 · Wikimedia Commons
• Pyro Mountain Kingsnake Lampropeltis pyromelana Patrick Alexander from Las Cruces, NM · CC0 · Wikimedia Commons
• Pyrrhuloxia Cardinalis sinuatus Brent Cox · CC BY 4.0 · iNaturalist

Q

• Queen Snake Regina septemvittata Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons

R

• Rainbow Snake Farancia erytrogramma Joshua Liverman · CC BY 4.0 · iNaturalist
• Razor-backed Musk Turtle Sternotherus carinatus Rudyard · CC BY 4.0 · iNaturalist
• Razor-Backed Musk Turtle Sternotherus carinatusRazor-backed musk turtle: high, dark-spotted shell and spotted head. Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Razorbill Alca torda Ryan F. Mandelbaum · CC BY 4.0 · iNaturalist
• Recluse spider (no common name given) Loxosceles apachea Andrew Meeds · CC BY 4.0 · iNaturalist
• Recluse spider (no common name given) Loxosceles blanda Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• Recluse spider (no common name given) Loxosceles devia Sam Kieschnick · CC BY 4.0 · iNaturalist
• Red Crossbill Loxia curvirostra Shirley Zundell · CC BY 4.0 · iNaturalist
• Red Diamond Rattlesnake Crotalus ruber Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Red Fox Vulpes vulpes fulva carbenoid · CC BY 4.0 · iNaturalist
• Red Fox Vulpes vulpes David Willingham · CC BY 4.0 · iNaturalist
• Red Imported Fire Ant Solenopsis invictaRed imported fire ant workers of mixed sizes swarming on sandy ground Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Red Imported Fire Ant Solenopsis invictaRed imported fire ant mound, flattened in grass with no entrance hole Linda Jo Conn · CC BY 4.0 · iNaturalist
• Red Knot Calidris canutus Dan Vickers · CC BY 4.0 · iNaturalist
• Red Phalarope Phalaropus fulicarius Dan Vickers · CC BY 4.0 · iNaturalist
• Red Squirrel Tamiasciurus hudsonicus lychnuchus CK2AZ · CC BY 4.0 · iNaturalist
• Red Squirrel Tamiasciurus hudsonicus oksanaetal · CC BY 4.0 · iNaturalist
• Red Swamp Crawfish Procambarus clarkii Juan Emilio Prades Bel · CC BY 4.0 · Wikimedia Commons
• Red widow Latrodectus bishopi Stevenklioze00 · CC BY-SA 4.0 · Wikimedia Commons
• Red Wolf Canis rufusHead-on view showing broad muzzle, tall ears and reddish legs Hillebrand Steve, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons
• Red Wolf Canis rufusWild red wolf crossing an open field beside pine forest in North Carolina Joshua Liverman · CC BY 4.0 · iNaturalist
• Red Wolf Canis rufusWild collared adult standing in a grassy field in North Carolina Katie Gipson · CC BY 4.0 · iNaturalist
• Red Wolf Canis rufusCollared wild adult partly hidden in tall vegetation Laura Mae · CC BY 4.0 · iNaturalist
• Red-backed Whiptail Aspidoscelis xanthonotus Cole Wolf · CC BY 4.0 · iNaturalist
• Red-banded Crab Spider Misumenoides formosipesWhite-banded crab spider (Misumenoides formosipes) face-on, eye rows and enlarged front legs Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Red-banded Crab Spider Misumenoides formosipes Raliugar · CC BY-SA 4.0 · Wikimedia Commons
• Red-bellied Woodpecker Melanerpes carolinus Michael · CC BY 4.0 · iNaturalist
• Red-billed Pigeon Patagioenas flavirostris John Thomlinson · CC BY 4.0 · iNaturalist
• Red-billed Tropicbird Phaethon aethereus Damien Wallace · CC0 1.0 · iNaturalist
• Red-breasted Merganser Mergus serrator Caroline Quinn · CC BY 4.0 · iNaturalist
• Red-breasted Nuthatch Sitta canadensis Matt Felperin · CC BY 4.0 · iNaturalist
• Red-cockaded Woodpecker Leuconotopicus borealis Henggang Cui · CC0 1.0 · iNaturalist
• Red-crowned Amazon Amazona viridigenalis James M. Maley · CC BY 4.0 · iNaturalist
• Red-Eared Slider Trachemys scripta elegansYoung slider swimming, showing the red ear stripe and patterned shell Irina Mitine · CC BY 4.0 · iNaturalist
• Red-Eared Slider Trachemys scripta elegansDarkened adult: narrow yellow head stripes and a faint red ear stripe Laura Clark · CC BY 4.0 · iNaturalist
• Red-Eared Slider Trachemys scripta elegansAdult basking on a stump, showing the red ear stripe and yellow head stripes ncb1221 · CC BY 4.0 · iNaturalist
• Red-faced Warbler Cardellina rubrifrons er-birds · CC BY 4.0 · iNaturalist
• Red-flanked Bluetail Tarsiger cyanurus Tom Field · CC BY 4.0 · iNaturalist
• Red-headed Woodpecker Melanerpes erythrocephalus Matthew Gerke · CC BY 4.0 · iNaturalist
• Red-legged Kittiwake Rissa brevirostris Nigel Voaden · CC BY 4.0 · iNaturalist
• Red-lored Amazon Amazona autumnalis Madeleine Claire · CC BY 4.0 · iNaturalist
• Red-masked Parakeet Aratinga erythrogenys Dario Taraborelli · CC0 1.0 · iNaturalist
• Red-naped Sapsucker Sphyrapicus nuchalis Don Wellmann · CC0 1.0 · iNaturalist
• Red-necked Grebe Podiceps grisegena Ben · CC0 1.0 · iNaturalist
• Red-necked Phalarope Phalaropus lobatus Dean Hester · CC BY 4.0 · iNaturalist
• Red-necked Stint Calidris ruficollis Dan Vickers · CC BY 4.0 · iNaturalist
• red-rim melania Melanoides tuberculata Steven Bodzin · CC BY 4.0 · iNaturalist
• Red-sided Curly-tailed Lizard Leiocephalus schreibersii Thamnophis · CC BY-SA 4.0 · Wikimedia Commons
• Red-spotted Toad Anaxyrus punctatus Nathan May · CC BY 4.0 · iNaturalist
• Red-tailed Hawk Buteo jamaicensisJuvenile in flight from below, brown barred tail, chased by a red-winged blackbird Brooke J · CC BY 4.0 · iNaturalist
• Red-tailed Hawk Buteo jamaicensisAdult in flight showing the rust-red tail and broad wings Devon Bradley · CC BY 4.0 · iNaturalist
• Red-tailed Hawk Buteo jamaicensisImmature perched on a conifer top; brown, barred tail Enoch Leung · CC BY-SA 2.0 · Wikimedia Commons
• Red-tailed Hawk Buteo jamaicensisAdult perched on a post, brown above, white below, rust-red tail NPS Photo · Public domain · Wikimedia Commons
• Red-tailed Tropicbird Phaethon rubricauda Damien Wallace · CC0 1.0 · iNaturalist
• Red-throated Loon Gavia stellata Andy Wilson · CC0 1.0 · iNaturalist
• Red-vented Bulbul Pycnonotus cafer Stosh Morency · CC BY 4.0 · iNaturalist
• Red-whiskered Bulbul Pycnonotus jocosus Dan Killam · CC BY 4.0 · iNaturalist
• Red-winged Blackbird Agelaius phoeniceus Matt Felperin · CC BY 4.0 · iNaturalist
• Reddish Egret Egretta rufescens Matt Schenck · CC BY 4.0 · iNaturalist
• Redhead Aythya americana Terry Woodward · CC BY 4.0 · iNaturalist
• Redlegged Purseweb Spider Sphodros rufipes jonsense · CC BY 4.0 · iNaturalist
• Redwing Turdus iliacus Alina Martin · CC BY 4.0 · iNaturalist
• Reef Gecko Sphaerodactylus notatus Ben Machado · CC BY 4.0 · iNaturalist
• Regal Black-striped Snake Coniophanes imperialis Center for Urban Ecology · CC0 1.0 · iNaturalist
• Regal Horned Lizard Phrynosoma solare Harrison J Elkins · CC BY 4.0 · iNaturalist
• Regal jumping spider Phidippus regius Dennis Vollmar · CC BY 4.0 · iNaturalist
• Regal jumping spider Phidippus regiusFemale regal jumping spider (Phidippus regius), grey with orange-and-black spotted abdomen Kai Squires · CC BY 4.0 · iNaturalist
• Resplendent Shovel-nosed Snake Chionactis annulata Dan Riley · CC BY 4.0 · iNaturalist
• Reticulate Collared Lizard Crotaphytus reticulatus Neil Balchan · CC BY 4.0 · Wikimedia Commons
• Reticulated Python Malayopython reticulatus Rushen · CC BY-SA 2.0 · Wikimedia Commons
• Rhinoceros Auklet Cerorhinca monocerata Kyle Bowman · CC0 1.0 · iNaturalist
• Ribbon Seal Histriophoca fasciata Michael Cameron, NOAA/NMFS/AKFSC/NMML · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Ridge-nosed Rattlesnake Crotalus willardi Court Harding · CC BY 4.0 · iNaturalist
• Ridgway's Rail Rallus obsoletus James M. Maley · CC BY 4.0 · iNaturalist
• Ring-billed Gull Larus delawarensis Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Ring-necked Duck Aythya collaris Henggang Cui · CC0 1.0 · iNaturalist
• Ring-necked Pheasant Phasianus colchicus Daughter Dad · CC BY 4.0 · iNaturalist
• Ringed Kingfisher Megaceryle torquata Brent Cox · CC BY 4.0 · iNaturalist
• Ringed Storm-petrel Oceanodroma hornbyi David F. Belmonte · CC BY 4.0 · Wikimedia Commons
• Ringed Wall Gecko Tarentola annularis kylieknight · CC0 1.0 · iNaturalist
• Ringtail Bassariscus astutus Dan Fitzgerald (Fitz) · CC0 1.0 · iNaturalist
• Rio Grande Chirping Frog Eleutherodactylus cystignathoides Stanton · CC BY-SA 4.0 · Wikimedia Commons
• Rio Grande Ground Squirrel Ictidomys parvidens Mike Brady · CC BY 4.0 · iNaturalist
• Rio Grande Leopard Frog Lithobates berlandieriRio Grande leopard frog: rounded dark spots, light jaw line and pale back ridges. Michelle W. （鍾偉瑋） · CC BY 4.0 · iNaturalist
• River Cooter Pseudemys concinna Sam Kieschnick · CC BY 4.0 · iNaturalist
• Roadside Hawk Rupornis magnirostris Adam Jackson · CC0 1.0 · iNaturalist
• Rock Dove Columba livia Abhipalsinghjadon1 · CC BY-SA 4.0 · Wikimedia Commons
• Rock Rattlesnake Crotalus lepidus Jake Nitta · CC BY 4.0 · iNaturalist
• Rock Sandpiper Calidris ptilocnemis Dan Vickers · CC BY 4.0 · iNaturalist
• Rock Squirrel Otospermophilus variegatus grammurus Kaden Slone · CC BY 4.0 · iNaturalist
• Rock Squirrel Otospermophilus variegatus markli · CC BY-SA 4.0 · iNaturalist
• Rock Wren Salpinctes obsoletus James M. Maley · CC BY 4.0 · iNaturalist
• Rock Wren Salpinctes obsoletus obsoletus Nigel Voaden · CC BY 4.0 · iNaturalist
• Rocky Mtn. Bighorn Sheep Ovis canadensis canadensis Eric Schmidt · CC BY 4.0 · iNaturalist
• Rose-bellied Lizard Sceloporus variabilis Pewenator · CC BY-SA 4.0 · Wikimedia Commons
• Rose-breasted Grosbeak Pheucticus ludovicianus Adam Jackson · CC0 1.0 · iNaturalist
• Rose-ringed Parakeet Psittacula krameri Dean Hester · CC BY 4.0 · iNaturalist
• Roseate Spoonbill Platalea ajaja Schyler Brown · CC0 1.0 · iNaturalist
• Roseate Tern Sterna dougallii Matt Felperin · CC BY 4.0 · iNaturalist
• Ross' s Goose Anser rossii Seth Wollney · CC BY 4.0 · iNaturalist
• Ross's Gull Rhodostethia rosea Rudyard · CC BY 4.0 · iNaturalist
• Rosy Boa Lichanura trivirgata Robb Hannawacker, while working for Joshua Tree National Park · Public domain · Wikimedia Commons
• Rosy-faced Lovebird Agapornis roseicollis Jared Shorma · CC BY 4.0 · iNaturalist
• Rough Earth Snake Haldea striatula Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Rough-legged Hawk Buteo lagopus Jonathan Eisen · CC BY 4.0 · iNaturalist
• Rough-skinned Newt Taricha granulosa Rand Workman · CC BY-SA 4.0 · iNaturalist
• Rough-tailed Gecko Cyrtopodion scabrum John G. Phillips · CC BY 4.0 · iNaturalist
• Round Stingray Urobatis halleriRound stingray (Urobatis halleri) in shallows: rounded disc, short tail with fin Vijay Barve · CC0 1.0 · iNaturalist
• Round Stingray Urolophus halleri Vijay Barve · CC0 1.0 · iNaturalist
• Round-tailed Horned Lizard Phrynosoma modestum Patrick Alexander from Las Cruces, NM · CC0 · Wikimedia Commons
• Round-tailed Horned Lizard Phrynosoma modestumRoundtail horned lizard on a rock, pale with dark brown side patches William · CC0 1.0 · iNaturalist
• Royal Tern Thalasseus maximus Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Ruby-crowned Kinglet Regulus calendula Dario Taraborelli · CC0 1.0 · iNaturalist
• Ruby-crowned Kinglet Regulus calendula calendula Kevin Achtmeyer · CC0 1.0 · iNaturalist
• Ruddy Quail-Dove Geotrygon montana Kim Hansen · CC BY-SA 3.0 · Wikimedia Commons
• Ruddy Turnstone Arenaria interpres Michael Eisen · CC BY 4.0 · iNaturalist
• Ruddy Turnstone Arenaria interpres morinella Wyatt Sibilia · CC BY 4.0 · iNaturalist
• Ruff Calidris pugnax Laura Gaudette · CC BY 4.0 · iNaturalist
• Ruffed Grouse Bonasa umbellus Matt Felperin · CC BY 4.0 · iNaturalist
• Rufous-backed Robin Turdus rufopalliatus Mike Ostrowski · CC BY-SA 4.0 · iNaturalist
• Rufous-capped Warbler Basileuterus rufifrons Dan Vickers · CC BY 4.0 · iNaturalist
• Rufous-crowned Sparrow Aimophila ruficeps James M. Maley · CC BY 4.0 · iNaturalist
• Rufous-necked Wood-Rail Aramides axillaris David F. Belmonte · CC BY 4.0 · Wikimedia Commons
• Rufous-winged Sparrow Peucaea carpalis Daniel S. Katz · CC BY 4.0 · iNaturalist
• Rusty Blackbird Euphagus carolinus Dan Vickers · CC BY 4.0 · iNaturalist
• Rusty Crayfish Faxonius rusticus Peterwchen · CC BY-SA 4.0 · Wikimedia Commons
• Rusty patched bumble bee Bombus affinis U.S. Fish and Wildlife Service - Midwest Region · Public domain · Wikimedia Commons (U.S. federal work, public domain)

S

• Sabine's Gull Xema sabini Dan Vickers · CC BY 4.0 · iNaturalist
• Sachem Atalopedes campestris Hawk T · CC BY 4.0 · iNaturalist
• Saddleback Caterpillar Acharia stimuleaTop view: green middle with a white-edged brown saddle, brown ends with spiny horns. Katja Schulz · CC BY 4.0 · iNaturalist
• Saddleback Caterpillar Acharia stimuleaSide view showing the stinging spines on its horns and side knobs. Katja Schulz · CC BY 4.0 · iNaturalist
• Saddleback Caterpillar Acharia stimulea Katja Schulz · CC BY 4.0 · iNaturalist
• Saddleback Caterpillar Acharia stimuleaCaterpillar on the underside edge of a leaf, where it often feeds. Mirko Schoenitz · CC0 1.0 · iNaturalist
• Saddled Leaf-nosed Snake Phyllorhynchus browni Jodhan Fine · CC0 1.0 · iNaturalist
• Sage Thrasher Oreoscoptes montanus Millie Basden · CC BY 4.0 · iNaturalist
• Sagebrush Sparrow Artemisiospiza nevadensis Rajan Rao · CC BY 4.0 · iNaturalist
• Saltmarsh Sparrow Ammospiza caudacuta Zac Peterson · CC BY 4.0 · iNaturalist
• Sambar Deer Rusa unicolor Cleveland Powell · CC BY 4.0 · iNaturalist
• Sand Tiger Carcharias taurusSand tiger cruising over a reef, ragged teeth and equal-sized dorsal fins Tom Heijnen · CC BY 4.0 · iNaturalist
• Sanderling Calidris alba John Matthew Erickson · CC BY 4.0 · iNaturalist
• Sandhill Crane Grus canadensis Cathy Perkins · CC0 1.0 · iNaturalist
• Sandwich Tern Thalasseus sandvicensis Mike Tilley · CC BY 4.0 · iNaturalist
• Sara Orangetip Anthocharis sara Brooke J · CC BY 4.0 · iNaturalist
• Savannah Sparrow Passerculus sandwichensis princeps Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Savannah Monitor Varanus exanthematicus Σ64 · CC BY 4.0 · Wikimedia Commons
• Savannah Sparrow Passerculus sandwichensis nevadensis Nigel Voaden · CC BY 4.0 · iNaturalist
• Savannah Sparrow Passerculus sandwichensis Sandy Wolkenberg · CC BY 4.0 · iNaturalist
• Say's Phoebe Sayornis saya Peter Chen 2.0 · CC BY 4.0 · iNaturalist
• Scaled Quail Callipepla squamata pallida nmoorhatch · CC BY 4.0 · iNaturalist
• Scalloped Hammerhead Sphyrna lewiniScalloped hammerhead (Sphyrna lewini) seen from above in open water Michael Bommerer · CC BY 4.0 · iNaturalist
• Scalloped Hammerhead Sphyrna lewiniScalloped hammerhead (Sphyrna lewini) swimming, wide hammer head and tall dorsal NOAA Photo Library · Public domain · Wikimedia Commons
• Scalloped Hammerhead Sphyrna lewiniScalloped hammerhead (Sphyrna lewini) approaching over a coral reef NOAA Photo Library · Public domain · Wikimedia Commons
• Scarlet Kingsnake Lampropeltis elapsoidesScarlet kingsnake: red snout; black rings keep red away from yellow. MH Herpetology · CC BY-SA 4.0 · Wikimedia Commons
• Scarlet Kingsnake Lampropeltis elapsoidesWhite-ringed scarlet kingsnake with a red snout, in leaf litter. Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Scarlet Kingsnake Lampropeltis elapsoides Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Scarlet Sheetweaver Florinda coccinea Even Dankowicz · CC BY 4.0 · iNaturalist
• Scarlet Snake Cemophora coccinea Stanton · CC BY-SA 4.0 · Wikimedia Commons
• Scarlet Tanager Piranga olivacea Shirley Zundell · CC BY 4.0 · iNaturalist
• Sceliphron caementariumBlack and yellow mud dauber (Sceliphron caementarium) showing thread waist and yellow marks Dan Vickers · CC BY 4.0 · iNaturalist
• Sceliphron caementariumBlack and yellow mud dauber (Sceliphron caementarium) gathering a mud ball Hlgu1 · CC BY-SA 3.0 · Wikimedia Commons
• Sceloporus occidentalis bocourtiiAdult female: grey-brown with two rows of dark wavy markings down the back. Irene · CC0 1.0 · iNaturalist
• Schott's Whipsnake Masticophis schotti Susan Blayney · CC BY 4.0 · iNaturalist
• Scissor-tailed Flycatcher Tyrannus forficatus Brooke J · CC BY 4.0 · iNaturalist
• Sea Nettle Chrysaora quinquecirrhaSea nettle offshore, sheltering a school of small fish among its tentacles. Greg McFall, Gray's Reef NMS, NOS, NOAA · Public domain · Wikimedia Commons
• Sea Nettle Chrysaora quinquecirrhaAtlantic sea nettle swimming, with long tentacles and frilly pinkish oral arms. Josiah Londerée · CC BY 4.0 · iNaturalist
• Sea Nettle Chrysaora quinquecirrha Josiah Londerée · CC BY 4.0 · iNaturalist
• Sea Otter Enhydra lutris benjchristensen · CC BY 4.0 · iNaturalist
• Seaside Sparrow Ammospiza maritima Laura Mae · CC BY 4.0 · iNaturalist
• Sedge Wren Cistothorus platensis stellaris Court Harding · CC BY 4.0 · iNaturalist
• Semipalmated Sandpiper Calidris pusilla Bill Keim · CC BY 4.0 · iNaturalist
• Shamrock Orbweaver Araneus trifolium Andrea Wallace · CC BY 4.0 · iNaturalist
• Sharp-shinned Hawk Accipiter striatus velox Brooke J · CC BY 4.0 · iNaturalist
• Sharp-tailed Grouse Tympanuchus phasianellus Cole Wolf · CC BY 4.0 · iNaturalist
• Sharp-tailed Sandpiper Calidris acuminata Damien Wallace · CC0 1.0 · iNaturalist
• Shasta Alligator Lizard Elgaria coerulea shastensis Matt Berger · CC BY 4.0 · iNaturalist
• Sheep Frog Hypopachus variolosus Sam Kieschnick · CC BY 4.0 · iNaturalist
• Sheet web weaver Neriene radiata Julia Beach · CC BY 4.0 · iNaturalist
• Shiny Cowbird Molothrus bonariensis Dan Vickers · CC BY 4.0 · iNaturalist
• Shoreline Wolf Spider Arctosa littoralis Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Short-billed Dowitcher Limnodromus griseus Andy Wilson · CC0 1.0 · iNaturalist
• Short-billed Dowitcher Limnodromus griseus hendersoni Kevin Achtmeyer · CC0 1.0 · iNaturalist
• Short-eared Owl Asio flammeus Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Short-eared Owl Asio flammeus flammeus Rajan Rao · CC BY 4.0 · iNaturalist
• Short-headed Gartersnake Thamnophis brachystoma evangrimes · CC BY 4.0 · iNaturalist
• Short-tailed Albatross Phoebastria albatrus steve b · CC0 1.0 · iNaturalist
• Short-tailed Kingsnake Lampropeltis extenuata Charles R. Smith, U.S. Fish and Wildlife Service · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Shortfin Mako Isurus oxyrinchusShortfin mako swimming, pointed snout, visible teeth and crescent tail Fábio Olmos · CC BY 4.0 · iNaturalist
• Shortfin Mako Isurus oxyrinchusUnderside view showing white snout underside and slender teeth Mark Conlin, SWFSC Large Pelagics Program · Public domain · Wikimedia Commons
• Siberian Ibex Capra sibirica Griha Hasanov · CC BY 4.0 · Wikimedia Commons
• Sidewinder Crotalus cerastesYoung sidewinder showing the upturned horn-like scales above its eyes. Adam J. Searcy · CC BY 4.0 · iNaturalist
• Sidewinder Crotalus cerastesPale sidewinder on sand at night; horns over the eyes and black tail rings. Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Sidewinder Crotalus cerastesPale sidewinder on sand, head raised, horn over the eye visible. Tereso Hernández Morales · CC BY 4.0 · iNaturalist
• Sierra Gartersnake Thamnophis couchii Jengod · CC BY-SA 4.0 · Wikimedia Commons
• Sika Deer Cervus nippon Tom Field · CC BY 4.0 · iNaturalist
• Silky Carcharhinus falciformis Joi Ito from Inbamura, Japan · CC BY 2.0 · Wikimedia Commons
• Silver-Haired Bat Lasionycteris noctivagans Sam Kieschnick · CC BY 4.0 · iNaturalist
• Six-lined Racerunner Aspidoscelis sexlineatusSix-lined racerunner: slim striped body and a very long thin tail. Jade Fortnash · CC0 1.0 · iNaturalist
• Six-lined Racerunner Aspidoscelis sexlineatus Joe Brewer · CC BY 4.0 · iNaturalist
• Sixgill stingray Hexatrygon bickelli NOAA Office of Ocean Exploration and Research · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Sky Lark Alauda arvensis Rosario Douglas · CC BY 4.0 · iNaturalist
• Slate-throated Redstart Myioborus miniatus Adam Jackson · CC0 1.0 · iNaturalist
• Slender brown scorpion Centruroides gracilis Eliass Tāre · CC BY 4.0 · iNaturalist
• Slender Glass Lizard Ophisaurus attenuatusSlender glass lizard: legless, with dark stripes along the back and sides. Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Slender Glass Lizard Ophisaurus attenuatus Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Small wood-nymph Cercyonis oetus Shawn Taylor · CC BY 4.0 · iNaturalist
• Small-billed Elaenia Elaenia parvirostris Adam Jackson · CC0 1.0 · iNaturalist
• Smalltooth sand tiger shark Odontaspis ferox Pacific Ring of Fire 2004 Expedition. NOAA Office of Ocean Exploration; Dr. Bob Embley, NOAA PMEL, Chief Scientist · Public domain · Wikimedia Commons (U.S. federal work, public domain)
• Smith's Longspur Calcarius pictus Nigel Voaden · CC BY 4.0 · iNaturalist
• Smooth Earth Snake Virginia valeriae Stanton · CC BY-SA 4.0 · Wikimedia Commons
• Smooth Greensnake Opheodrys vernalis blanchardi Alison Northup · CC BY 4.0 · iNaturalist
• Smooth Greensnake Opheodrys vernalis User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Snail Kite Rostrhamus sociabilis Barry Stewart · CC BY 4.0 · iNaturalist
• Snow Bunting Plectrophenax nivalis Laura Gaudette · CC BY 4.0 · iNaturalist
• Snow Bunting Plectrophenax nivalis nivalis The Vertebrate Pokédex · CC0 1.0 · iNaturalist
• Snow Goose Anser caerulescens Dario Taraborelli · CC0 1.0 · iNaturalist
• Snowshoe Hare Lepus americanus Matt Muir · CC BY 4.0 · iNaturalist
• Snowy Egret Egretta thula Jonathan Eisen · CC BY 4.0 · iNaturalist
• Snowy Owl Bubo scandiacus Rajan Rao · CC BY 4.0 · iNaturalist
• Snowy Plover Anarhynchus nivosus Garth Harwood · CC BY 4.0 · iNaturalist
• Snowy Plover Charadrius nivosus Garth Harwood · CC BY 4.0 · iNaturalist
• Social Flycatcher Myiozetetes similis Reid Hardin · CC BY 4.0 · iNaturalist
• Solenopsis xyloniSouthern fire ant winged queen David Rankin · CC BY 4.0 · iNaturalist
• Solenopsis xyloniSouthern fire ant worker: reddish body, two-segment waist, dark gaster Jake Nitta · CC BY 4.0 · Wikimedia Commons
• Solitary Sandpiper Tringa solitaria Robert Harris · CC BY 4.0 · iNaturalist
• Song Sparrow Melospiza melodia Claude Lyneis · CC0 1.0 · iNaturalist
• Sonora Mud Turtle Kinosternon sonoriense Jake Nitta · CC BY 4.0 · iNaturalist
• Sonoran Collared Lizard Crotaphytus nebrius Cecelia Alexander · CC0 1.0 · iNaturalist
• Sonoran Coralsnake Micruroides euryxanthusClose view of the ring order: red, white, black, white, red. Dan Riley · CC BY 4.0 · iNaturalist
• Sonoran Coralsnake Micruroides euryxanthusSonoran coral snake (Micruroides euryxanthus): black head, red touching cream rings David Jahn · CC BY-SA 2.0 · Wikimedia Commons
• Sonoran Coralsnake Micruroides euryxanthus David Jahn · CC BY-SA 2.0 · Wikimedia Commons
• Sonoran Coralsnake Micruroides euryxanthusWhole snake on rock: red rings touch pale rings; black head and black tail. Tom Kennedy · CC BY 4.0 · iNaturalist
• Sonoran Desert Toad Incilius alvariusYoung Sonoran Desert toad with small dark spots on the back. CK2AZ · CC BY 4.0 · iNaturalist
• Sonoran Desert Toad Incilius alvariusLarge adult Sonoran Desert toad: smooth olive skin and long gland behind the eye. Lon Brehmer · CC BY 4.0 · iNaturalist
• Sonoran Desert Toad Incilius alvarius Lon Brehmer · CC BY 4.0 · iNaturalist
• Sonoran Desert Toad Incilius alvariusHead close-up: amber eye, round eardrum, long parotoid and white wart by the mouth. Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Sonoran Green Toad Anaxyrus retiformis Nick Tobler (Cowturtle) · CC BY 4.0 · iNaturalist
• Sonoran Lyresnake Trimorphodon lambda Jodhan Fine · CC0 1.0 · iNaturalist
• Sonoran Spotted Whiptail Aspidoscelis sonorae gailhampshire from Cradley, Malvern, U.K · CC BY 2.0 · Wikimedia Commons
• Sonoran Whipsnake Coluber bilineatus Jake Nitta · CC BY 4.0 · iNaturalist
• Sooty Grouse Dendragapus fuliginosus Amelia Tauber · CC BY 4.0 · iNaturalist
• Sora Porzana carolina Dario Taraborelli · CC0 1.0 · iNaturalist
• South Polar Skua Stercorarius maccormicki Steven Lamonde · CC BY 4.0 · iNaturalist
• Southeast Asian Cellar Spider Crossopriza lyoniTailed cellar spider (Crossopriza lyoni) female in a loose web in a wall corner Rusty · CC BY 4.0 · iNaturalist
• Southeast Asian Cellar Spider Crossopriza lyoni Sandra H Statner · CC BY 4.0 · iNaturalist
• Southeastern Five Lined Skink Plestiodon inexpectatus Kai Squires · CC BY 4.0 · iNaturalist
• Southern Alligator Lizard Elgaria multicarinataSouthern alligator lizard head among leaves, showing gold eye and banded back Pacific Southwest Region USFWS from Sacramento, US · Public domain · Wikimedia Commons
• Southern Black Racer Coluber constrictor priapus Bobyellow · CC BY-SA 4.0 · Wikimedia Commons
• Southern Coal Skink Plestiodon anthracinus pluvialis Thomas Koffel · CC BY 4.0 · iNaturalist
• Southern Hog-nosed Snake Heterodon simusSouthern hognose snake on white sand, blotched with orange between blotches Court Harding · CC BY 4.0 · iNaturalist
• Southern Hog-nosed Snake Heterodon simus Court Harding · CC BY 4.0 · iNaturalist
• Southern House Spider Kukulcania hibernalis Sam Taylor · CC BY 4.0 · iNaturalist
• Southern Leopard Frog Lithobates sphenocephalus Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Southern Leopard Frog Lithobates sphenocephalus Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Southern Painted Turtle Chrysemys dorsalis Laura Mae · CC BY 4.0 · iNaturalist
• Southern Plains Bumble Bee Bombus fraternus TheMongrelKoi · CC0 1.0 · iNaturalist
• Southern Prairie Lizard Sceloporus consobrinus Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Southern Rubber Boa Charina umbratica nmoorhatch · CC BY 4.0 · iNaturalist
• Southern Short-tailed Shrew Blarina carolinensis Greg Schechter from San Francisco, USA · CC BY 2.0 · Wikimedia Commons
• Southern Stingray Hypanus americanusSouthern stingray (Hypanus americanus) on sand, showing angular disc and whip tail Dan Schofield · CC BY 4.0 · Wikimedia Commons
• Southern Stingray Hypanus americanusJuvenile southern stingray (Hypanus americanus) over seagrass Natalie Waddell-Rutter · CC BY 4.0 · iNaturalist
• Southern Swamp Sparrow Melospiza georgiana georgiana Joseph D Kurtz · CC BY 4.0 · iNaturalist
• Southern Toad Anaxyrus terrestrisSeen from above: the two knobbed head crests and oval glands behind the eyes. cwarneke · CC0 1.0 · iNaturalist
• Southern Toad Anaxyrus terrestrisA reddish, boldly patterned southern toad showing its knobbed crests. Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Southern Toad Anaxyrus terrestrisSouthern toad: high head crest ending in a raised knob behind the eye. Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Southern Toad Anaxyrus terrestris Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Southern Yellowjacket Vespula squamosaSouthern yellowjacket female with orange-brown abdomen on a windowsill Cole Shoemaker · CC BY 4.0 · iNaturalist
• Southern Yellowjacket Vespula squamosa Gordon C. Snelling · CC BY 4.0 · iNaturalist
• Southwestern Fence Lizard Sceloporus cowlesi Ethan Wright-Magoon · CC0 1.0 · iNaturalist
• Speckled Kingsnake Lampropeltis holbrooki Paul Roots · CC BY 4.0 · iNaturalist
• Speckled Kingsnake Lampropeltis holbrooki Peter Paplanus from St. Louis, Missouri · CC BY 4.0 · Wikimedia Commons
• Speckled Racer Drymobius margaritiferus Reid Hardin · CC BY 4.0 · iNaturalist
• Speckled Rattlesnake Crotalus mitchellii Ken-ichi Ueda · CC BY 4.0 · Wikimedia Commons
• Sperm Whale Physeter macrocephalus Whale Watch Kaikoura / Destination Kaikōura · CC BY 4.0 · Wikimedia Commons
• Spined Micrathena Micrathena gracilis Ken Clark · CC BY 4.0 · iNaturalist
• Spinner Dolphin Stenella longirostris Robert Webster · CC BY-SA 4.0 · iNaturalist
• Spiny Oak Slug Euclea delphinii Andy Reago & Chrissy McClarren · CC BY 2.0 · Wikimedia Commons
• Spitting Spider Scytodes thoracica Kristen Diesburg · CC BY 4.0 · iNaturalist
• Spongy moth Lymantria disparClose-up of a female, cream-white with dark zigzag wing lines. Chris Chimaera · CC BY 4.0 · iNaturalist
• Spongy moth Lymantria disparWhite female moth resting on its tan, fuzzy egg mass on tree bark. Emmett Collins-Sussman · CC BY 4.0 · iNaturalist
• Spongy moth Lymantria disparMale moth: gray-brown with dark wavy bands and large feathery antennae. Jerzystrzelecki · CC BY-SA 4.0 · Wikimedia Commons
• Spot-breasted Oriole caymanmatt · CC BY 4.0 · iNaturalist
• Spotted Chorus Frog Pseudacris clarkii Mike Duran · CC BY 4.0 · iNaturalist
• Spotted Dove Spilopelia chinensis Dario Taraborelli · CC0 1.0 · iNaturalist
• Spotted Eagle Ray Aetobatus narinari John Burnett · CC BY-SA 4.0 · iNaturalist
• Spotted Ground Squirrel Xerospermophilus spilosoma CK2AZ · CC BY 4.0 · iNaturalist
• Spotted Lanternfly Lycorma delicatulaLate-stage red nymph with black and white markings Andrew Conboy · CC BY 4.0 · iNaturalist
• Spotted Lanternfly Lycorma delicatulaAdult on a stem, black-spotted forewings ending in a speckled band Isaac Caswell · CC0 1.0 · iNaturalist
• Spotted Lanternfly Lycorma delicatulaEarly-stage black nymph with white spots Josie Graydon · CC BY 4.0 · iNaturalist
• Spotted Leaf-nosed Snake Phyllorhynchus decurtatus Cypress Hansen · CC BY 4.0 · iNaturalist
• Spotted orbweaver Neoscona domiciliorum Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Spotted orbweaver Neoscona domiciliorumRed-femured spotted orbweaver (Neoscona domiciliorum) in its web Theresa Thom · Public domain · Wikimedia Commons
• Spotted Owl Strix occidentalis Nigel Voaden · CC BY 4.0 · iNaturalist
• Spotted Rail Pardirallus maculatus Annika Lindqvist · CC BY 4.0 · iNaturalist
• Spotted salamander Ambystoma maculatumTop view of an adult on autumn leaves, showing the two spot rows. Kent P. McFarland · CC0 1.0 · iNaturalist
• Spotted salamander Ambystoma maculatumAdult on moss: slate-black body with two rows of round yellow spots. User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Spotted salamander Ambystoma maculatumHead close-up showing yellow spots behind the eye and rib-like side grooves. User:Rstanton13 · CC BY-SA 4.0 · Wikimedia Commons
• Spotted Sandpiper Actitis macularius Ryan Elliott · CC BY 4.0 · iNaturalist
• Spotted Towhee Pipilo maculatus Daniel S. Katz · CC BY 4.0 · iNaturalist
• Spotted Turtle Clemmys guttata Nick Block · CC BY 4.0 · iNaturalist
• Spotted Wing Drosophila Drosophila suzukii Katja Schulz · CC BY 4.0 · iNaturalist
• Sprague's Pipit Anthus spragueii Owen McElroy · CC0 1.0 · iNaturalist
• Spruce Grouse Canachites canadensis Romain Boisseau · CC BY-SA 4.0 · iNaturalist
• Sri Lankan Spotted House Gecko Hemidactylus parvimaculatus Gihan Jayaweera · CC BY-SA 4.0 · Wikimedia Commons
• Stagmomantis carolinaCarolina mantis (Stagmomantis carolina), gray-brown adult in threat display Andy Wilson · CC0 1.0 · iNaturalist
• Stagmomantis carolinaCarolina mantis (Stagmomantis carolina), green female showing spiny forelegs jupiterswasphouse · CC BY-SA 4.0 · iNaturalist
• Steller Sea Lion Eumetopias jubatus Charles J. Sharp · CC BY-SA 4.0 · Wikimedia Commons
• Steller's Eider Polysticta stelleri Nigel Voaden · CC BY 4.0 · iNaturalist
• Steller's Jay Cyanocitta stelleri macrolopha Dan Vickers · CC BY 4.0 · iNaturalist
• Steller’s Sea-Eagle Haliaeetus pelagicus Matt Felperin · CC BY 4.0 · iNaturalist
• Stilt Sandpiper Calidris himantopus Dan Vickers · CC BY 4.0 · iNaturalist
• Stinging Rose Caterpillar Parasa indetermina M. Whitson · CC BY 4.0 · iNaturalist
• Stripe-necked Musk Turtle Sternotherus peltiferStripe-necked musk turtle resting underwater beneath a rock in a stream. Michael A. Alcorn · CC BY 4.0 · Wikimedia Commons
• Striped bark scorpion Centruroides vittatusStriped bark scorpion (Centruroides vittatus) showing two dark back stripes and dark head triangle Alex · CC0 1.0 · iNaturalist
• Striped bark scorpion Centruroides vittatusStriped bark scorpion: tan body with two dark back stripes and dark head triangle. Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Striped bark scorpion Centruroides vittatusStriped bark scorpion (Centruroides vittatus) on rocky ground, tail curled to the side Thomas Koffel · CC BY 4.0 · iNaturalist
• Striped bark scorpion Centruroides vittatusFemale striped bark scorpion on bare ground. Thomas Koffel · CC BY 4.0 · iNaturalist
• Striped Crayfish Snake Liodytes alleni Jeremiah Degenhardt · CC BY 4.0 · iNaturalist
• Striped Dolphin Stenella coeruleoalba Wanax01 · CC BY-SA 4.0 · Wikimedia Commons
• Striped Lynx Spider Oxyopes salticus cesar stastny · CC BY 4.0 · iNaturalist
• Striped Plateau Lizard Sceloporus virgatus Bettina Arrigoni · CC BY 2.0 · Wikimedia Commons
• Striped Racer Masticophis lateralis Chris Brown · CC BY 4.0 · iNaturalist
• Striped Skunk Mephitis mephitis Mirko Schoenitz · CC0 1.0 · iNaturalist
• Striped Whipsnake Masticophis taeniatus Wendy St. John · CC BY-SA 4.0 · iNaturalist
• Striped Wolf Spider Rabidosa rabidaRabid wolf spider (Rabidosa rabida) on goldenrod, showing dark lengthwise stripes Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Striped Wolf Spider Rabidosa rabida Timothy Lindsey · CC BY 4.0 · iNaturalist
• Stripedtail Scorpion Vaejovis spinigerus Logan J.L. Bradley · CC BY 4.0 · iNaturalist
• Stygian Owl Asio stygius Hector Bottai · CC BY-SA 4.0 · Wikimedia Commons
• Sulphur-bellied Flycatcher Myiodynastes luteiventris Kevin Brix · CC BY-SA 4.0 · iNaturalist
• Sulphur-bellied Flycatcher Myiodynastes luteiventris swarthi Kevin Brix · CC BY-SA 4.0 · iNaturalist
• Summer Tanager Piranga rubra zr217 · CC BY 4.0 · iNaturalist
• Surf Scoter Melanitta perspicillata Timothy McNitt · CC BY 4.0 · iNaturalist
• Surfbird Calidris virgata Adam Jackson · CC0 1.0 · iNaturalist
• Swainson's Warbler Limnothlypis swainsonii Karen Szafrajda · CC BY 4.0 · iNaturalist
• Swallow-tailed Gull Creagrus furcatus Jodhan Fine · CC0 1.0 · iNaturalist
• Swallow-tailed Kite Elanoides forficatus Dan Vickers · CC BY 4.0 · iNaturalist
• Swallow-tailed Kite Elanoides forficatus forficatus Dan Vickers · CC BY 4.0 · iNaturalist
• Swamp Sparrow Melospiza georgiana Doug Brush · CC BY 4.0 · iNaturalist
• Swift Fox Vulpes velox Spencer Hurt · CC BY 4.0 · iNaturalist
• Switak’s Banded Gecko Coleonyx switaki Adam J. Searcy · CC BY 4.0 · iNaturalist

T

• Tabanus americanusAmerican horse fly with green eyes and clear wings drnancyjackson · CC BY 4.0 · iNaturalist
• Tabanus atratusBlack horse fly head-on, huge blue-grey eyes and dark wings Jim Moore (Maryland) · CC BY 4.0 · iNaturalist
• Tabanus sulcifronsFurrowed horse fly side view: stout body, huge banded eyes, short thick antennae xpda · CC BY-SA 4.0 · Wikimedia Commons
• Tamaulipan Hook-nosed Snake Ficimia streckeri Mike Duran · CC BY 4.0 · iNaturalist
• Tarantula Aphonopelma steindachneri Aaron Polichar · CC0 1.0 · iNaturalist
• Tarantula Aphonopelma chalcodes Carlos A. Armenta · CC BY-SA 4.0 · iNaturalist
• Tarantula Aphonopelma vorhiesi Lauren McLaurin · CC BY 4.0 · iNaturalist
• Tarantula Aphonopelma marxi Robbie Hannawacker · CC0 1.0 · iNaturalist
• Tarantula Aphonopelma chalcodesMale desert blonde tarantula (Aphonopelma chalcodes) with black legs and reddish carapace Scott Crabtree · CC BY 4.0 · iNaturalist
• Tarantula Aphonopelma chalcodesDesert blonde tarantulas (Aphonopelma chalcodes) mating: dark male and pale blonde female Sue Carnahan · CC BY 4.0 · iNaturalist
• Tarantula Aphonopelma hentziFemale Texas brown tarantula (Aphonopelma hentzi) from above, showing reddish abdominal hairs Tommy · CC0 1.0 · iNaturalist
• Tarantula Aphonopelma gabeli William · CC0 1.0 · iNaturalist
• Tarantula Aphonopelma hentziTexas brown tarantula (Aphonopelma hentzi) walking on dark rock xpda · CC BY-SA 4.0 · Wikimedia Commons
• Tennessee Warbler Leiothlypis peregrina froggymum · CC BY 4.0 · iNaturalist
• Terek Sandpiper Xenus cinereus Afsarnayakkan · CC BY-SA 4.0 · Wikimedia Commons
• Terrestrial Gartersnake Thamnophis elegansWandering garter snake swimming among grass in shallow water Yellowstone National Park · Public domain · Wikimedia Commons
• Texas Alligator Lizard Gerrhonotus infernalis Michelle W. （鍾偉瑋） · CC BY 4.0 · iNaturalist
• Texas Banded Gecko Coleonyx brevis Matt Berger · CC BY 4.0 · Wikimedia Commons
• Texas Blind Snake Rena dulcis Turner Brockman · CC BY-SA 4.0 · iNaturalist
• Texas Coralsnake Micrurus tenerTexas coral snake in leaf litter: red and yellow rings touch. Brady Reed · CC0 1.0 · iNaturalist
• Texas Coralsnake Micrurus tenerClose view: black snout, yellow collar, and red rings bordered by yellow. Brady Reed · CC0 1.0 · iNaturalist
• Texas Coralsnake Micrurus tenerTexas coral snake (Micrurus tener) coiled in grass, red touching yellow rings Nick Loveland · CC0 1.0 · iNaturalist
• Texas Coralsnake Micrurus tenerTexas coral snake (Micrurus tener) crossing a pale dirt road Wendy McCrady · CC BY 4.0 · Wikimedia Commons
• Texas Coralsnake Micrurus tenerCrossing a pale gravel road; the rings are visible along the whole body. Wendy McCrady · CC BY 4.0 · Wikimedia Commons
• Texas Horned Lizard Phrynosoma cornutumTexas horned lizard from behind, showing back stripe, spots and side fringe Bob Nieman · CC BY 4.0 · iNaturalist
• Texas Horned Lizard Phrynosoma cornutumYoung Texas horned lizard on sand beside a wooden post Dan Martin (Malum Scientificus) · CC BY 4.0 · iNaturalist
• Texas Horned Lizard Phrynosoma cornutumTexas horned lizard on pale sand, with light back line and dark blotches Gabriel Campbell-Martinez · CC BY 4.0 · iNaturalist
• Texas Spiny Lizard Sceloporus olivaceus lwolfartist · CC BY 2.0 · Wikimedia Commons
• Texas Toad Anaxyrus speciosus Sam Kieschnick · CC BY 4.0 · iNaturalist
• Thick-billed Kingbird Tyrannus crassirostris Don Wellmann · CC0 1.0 · iNaturalist
• Thirteen-lined Ground Squirrel Ictidomys tridecemlineatus Evan H · CC BY 4.0 · iNaturalist
• Thornscrub Brown Vinesnake Oxybelis microphthalmus Sue Carnahan · CC BY 4.0 · Wikimedia Commons
• Three-Toed Box Turtle Terrapene carolina triunguis Brian Dickerson · CC0 1.0 · iNaturalist
• Three-Toed Box Turtle Terrapene triunguis Brian Dickerson · CC0 1.0 · iNaturalist
• Tiger Rattlesnake Crotalus tigris Mike Ostrowski · CC BY-SA 4.0 · iNaturalist
• Tiger Shark Galeocerdo cuvierClose view of very broad head, blunt snout and vertical stripes cello caruso-turiello · CC BY 4.0 · iNaturalist
• Tiger Shark Galeocerdo cuvierTiger shark in open blue water, showing striped flank and tail Duban Espinoza · CC BY 4.0 · iNaturalist
• Tiger Shark Galeocerdo cuvierAdult tiger shark swimming, showing blunt snout and faint side bars Georgina Jones · CC BY-SA 4.0 · iNaturalist
• Tiger Shark Galeocerdo cuvierTiger shark cruising over a reef and sand bottom, side profile Vsevolod Rudyi · CC BY 4.0 · iNaturalist
• Tiger Whiptail Aspidoscelis tigris Greg Schechter · CC BY 2.0 · Wikimedia Commons
• Tokay Gecko Gekko gecko Rushen · CC BY-SA 2.0 · Wikimedia Commons
• Tomato Hornworm Manduca quinquemaculataAdult five-spotted hawk moth, gray wings and orange-yellow abdominal spots Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Tomato Hornworm Manduca quinquemaculataCaterpillar on a stem, white V-shaped side marks and dark horn Dan Horowitz · CC0 1.0 · iNaturalist
• Tomato Hornworm Manduca quinquemaculataLarge caterpillar showing V-shaped marks, eyespot-like spiracles and black horn nmoorhatch · CC BY 4.0 · iNaturalist
• Tomato Hornworm Manduca quinquemaculataAdult moth close-up of the five pairs of yellow abdominal spots Sue Carnahan · CC BY 4.0 · iNaturalist
• Townsend's Solitaire Myadestes townsendi Laurel Meredyk · CC BY 4.0 · iNaturalist
• Townsend's Warbler Setophaga townsendi Cricket Raspet · CC BY 4.0 · iNaturalist
• Trans-Pecos Rat Snake Bogertophis subocularis Tom Kennedy · CC BY 4.0 · iNaturalist
• Trashline Orbweaver Cyclosa turbinata Katja Schulz from Washington, D. C., USA · CC BY 2.0 · Wikimedia Commons
• Tree Swallow Tachycineta bicolor Jon Robson · CC BY-SA 4.0 · iNaturalist
• Triangle Weaver (Triangle Orbweaver) Hyptiotes cavatus Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Triangle-bearing Orbweaver Verrucosa arenata Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Triatoma gerstaeckeriTriatoma gerstaeckeri from above, dark with orange marks on the abdomen edge Juan Cruzado Cortés · CC BY-SA 4.0 · Wikimedia Commons
• Tricolored Heron Egretta tricolor ruficollis Michael W Belitz · CC0 1.0 · iNaturalist
• Tricolored Heron Egretta tricolor Zack Abbey · CC BY 4.0 · iNaturalist
• Tricolored Munia Dennis Vollmar · CC BY 4.0 · iNaturalist
• Tropical fire ant Solenopsis geminata Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Tropical fire ant (native fire ant) Solenopsis geminataTropical fire ant worker on a plant stem portioid · CC BY-SA 4.0 · Wikimedia Commons
• Tropical House Gecko Hemidactylus mabouia natalie · CC0 1.0 · iNaturalist
• Tropical Parula Setophaga pitiayumi Matt Felperin · CC BY 4.0 · iNaturalist
• Trypoxylon politumOrgan pipe mud dauber (Trypoxylon politum) nest of vertical mud tubes Clifton Ladd, C.W.B · CC BY 4.0 · iNaturalist
• Tuberculated Crab Spider Tmarus angulatus Bill Keim · CC BY 4.0 · iNaturalist
• Tufted Flycatcher Mitrephanes phaeocercus Fyn Kynd · CC BY-SA 4.0 · iNaturalist
• Tufted Puffin Fratercula cirrhata Nigel Voaden · CC BY 4.0 · iNaturalist
• Tundra Bean-Goose Anser serrirostris Troy B · CC BY 4.0 · iNaturalist
• Tundra Swan Cygnus columbianus Andy Wilson · CC0 1.0 · iNaturalist
• Turkey Vulture Cathartes auraAdult perched on a sign: brownish-black body, small red bare head, pale bill Brooke J · CC BY 4.0 · iNaturalist
• Turkey Vulture Cathartes auraSoaring overhead: two-toned wings, black in front and silvery behind Dennis Hays · CC0 1.0 · iNaturalist
• Turkey Vulture Cathartes auraHead close-up: bare red skin and pale hooked bill Mark Gunn from Novato, California, USA · CC BY 2.0 · Wikimedia Commons
• Twin-spotted Rattlesnake Crotalus pricei Roger Rittmaster · CC BY 4.0 · iNaturalist
• Twin-spotted Spiny Lizard Sceloporus bimaculosus Tom Kennedy · CC BY 4.0 · iNaturalist
• Two-Spotted Skipper Euphyes bimacula Arlo Sitimans · CC BY 4.0 · iNaturalist
• Two-striped Gartersnake Thamnophis hammondii Connor Long · CC BY-SA 4.0 · Wikimedia Commons

U

• Ummidia audouiniAudouin's trapdoor spider (Ummidia audouini), glossy black, on fallen leaves Leila Dasher · CC BY 4.0 · iNaturalist
• Ummidia audouiniFemale Audouin's trapdoor spider (Ummidia audouini) close-up of glossy carapace and eyes Turner Brockman · CC BY-SA 4.0 · iNaturalist
• Upland Sandpiper Bartramia longicauda Jacob Saucier · CC BY 4.0 · iNaturalist
• Urobatis jamaicensisYellow stingray (Urobatis jamaicensis) resting in seagrass Jared Shorma · CC BY 4.0 · iNaturalist
• Urobatis jamaicensisYellow stingray (Urobatis jamaicensis) showing dense vermiculated and ringed pattern Robert Webster · CC BY-SA 4.0 · iNaturalist
• Ursus arctos horribilisBlonde grizzly walking through tundra grass in Denali Annika Lindqvist · CC BY 4.0 · iNaturalist
• Ursus arctos horribilisLarge brown bear standing in a river, long curved front claws visible KatmaiNPS · Public domain · Wikimedia Commons
• Ursus arctos horribilisBrown bear catching a salmon at a waterfall KatmaiNPS · Public domain · Wikimedia Commons
• Ursus arctos horribilisGrizzled brown grizzly standing in meadow, showing shoulder hump and dished face Romain Boisseau · CC BY-SA 4.0 · iNaturalist

V

• Valley Garter Snake Thamnophis sirtalis fitchi Jonathan Eisen · CC BY 4.0 · iNaturalist
• Variable Ground Snake Sonora semiannulata Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Variable Orbweaver Neoscona cruciferaSpotted orbweaver (Neoscona crucifera) at night, showing large rounded hairy abdomen dhasdf · CC BY 4.0 · iNaturalist
• Variable Orbweaver Neoscona cruciferaYoung spotted orbweaver (Neoscona crucifera) at the hub of its orb web Justin Williams · CC BY 4.0 · iNaturalist
• Varied Bunting Passerina versicolor Dan Vickers · CC BY 4.0 · iNaturalist
• Varied Thrush Ixoreus naevius er-birds · CC BY 4.0 · iNaturalist
• Varied Thrush Ixoreus naevius meruloides Nigel Voaden · CC BY 4.0 · iNaturalist
• Veery Catharus fuscescens Corey Farwell · CC BY 4.0 · iNaturalist
• Veiled Chameleon Chamaeleo calyptratus Σ64 · CC BY 4.0 · Wikimedia Commons
• Verdin Auriparus flaviceps Craig Hensley · CC BY 4.0 · iNaturalist
• Vermilion Flycatcher Pyrocephalus rubinus Jared Shorma · CC BY 4.0 · iNaturalist
• Vespa mandarinia japonicaClose view showing the large all-orange head and banded abdomen Lek Khauv · CC BY 4.0 · iNaturalist
• Vespa mandarinia japonicaSeveral hornets at a nest entrance in a hollow tree Timur Kalininsky · CC BY 4.0 · iNaturalist
• Vespa mandarinia japonicaHornet resting on shrub leaves yajapin · CC BY 4.0 · iNaturalist
• Vesper Sparrow Pooecetes gramineus Dani Alba · CC BY 4.0 · iNaturalist
• Vespula vidua Even Dankowicz · CC BY 4.0 · iNaturalist
• Violet-crowned Hummingbird Leucolia violiceps Dean Hester · CC BY 4.0 · iNaturalist
• Violet-green Swallow Tachycineta thalassina Ryan F. Mandelbaum · CC BY 4.0 · iNaturalist
• Virginia Opossum Didelphis virginiana virginianaFemale opossum carrying a litter of young on her back Millie Basden · CC BY 4.0 · iNaturalist
• Virginia Rail Rallus limicola Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Virginia's Warbler Leiothlypis virginiae Tom Kennedy · CC BY 4.0 · iNaturalist

W

• Wandering Albatross Diomedea exulans Benoit Gineste · CC BY-SA 4.0 · Wikimedia Commons
• Wandering Glider Pantala flavescens Ben · CC0 1.0 · iNaturalist
• Wedge-rumped Storm-petrel Oceanodroma tethys (c) William Stephens, some rights reserved (CC BY) · CC BY 4.0 · Wikimedia Commons
• Wedge-tailed Shearwater Ardenna pacifica Damien Wallace · CC0 1.0 · iNaturalist
• West Indian Manatee Trichechus manatusManatee lifting its snout above the surface to breathe elik03 · CC BY 4.0 · iNaturalist
• West Indian Manatee Trichechus manatusClose view of the whiskered muzzle and wrinkled gray skin Ryan Hagerty · Public domain · Wikimedia Commons
• Western Arboreal Orbweaver Neoscona oaxacensis Rebecca Ray · CC BY 4.0 · iNaturalist
• Western Banded Gecko Coleonyx variegatus Dylan C Thomas · CC0 1.0 · iNaturalist
• Western Black-tailed Rattlesnake Crotalus molossus molossus Brandon Bourassa · CC BY 4.0 · iNaturalist
• Western Blacklegged Tick Ixodes pacificus Kaldari · CC0 · Wikimedia Commons
• Western Bloodsucking Conenose Triatoma protracta Andrew Meeds · CC BY 4.0 · iNaturalist
• Western Diamond-backed Rattlesnake Crotalus atroxYoung snake on red soil with crisp, distinct diamond markings B. P. White · CC BY-SA 4.0 · iNaturalist
• Western Diamond-backed Rattlesnake Crotalus atroxAdult in defensive coil with rattle raised, showing black-and-white tail bands Gary Stolz (original) · Public domain · Wikimedia Commons
• Western Diamond-backed Rattlesnake Crotalus atroxReddish adult coiled on dry ground, with banded tail and rattle Logan J.L. Bradley · CC BY 4.0 · iNaturalist
• Western Diamond-backed Rattlesnake Crotalus atroxCoiled adult showing dark-edged brown diamonds outlined in cream Mike Lewinski · CC BY 4.0 · iNaturalist
• Western Diamond-backed Rattlesnake Crotalus atroxHead close-up showing vertical pupil, facial pit and pale facial stripe Sam Kieschnick · CC BY 4.0 · iNaturalist
• Western Fence Lizard Sceloporus occidentalis mostbittern · CC BY 4.0 · iNaturalist
• Western Fence Lizard Sceloporus occidentalisAdult male on an oak trunk, showing bright blue scales and blue throat. Shawn O'Donnell · CC BY 4.0 · iNaturalist
• Western forest scorpion (California forest scorpion) Uroctonus mordax Alan Rockefeller · CC BY 4.0 · Wikimedia Commons
• Western Foxsnake Pantherophis ramspotti Jonathan Bayer · CC BY 4.0 · iNaturalist
• Western Gray Squirrel Sciurus griseus Eric Johnson · CC BY 4.0 · iNaturalist
• Western Grebe Aechmophorus occidentalis Ben · CC0 1.0 · iNaturalist
• Western Green Lacerta Lacerta bilineata Chris Le Jeune · CC BY-SA 4.0 · Wikimedia Commons
• Western Lynx Spider Oxyopes scalaris Claus Giloi · CC BY 4.0 · iNaturalist
• Western Massasauga Sistrurus tergeminusWestern massasauga stretched across a gravel road, showing rows of dark blotches. NPS photo · Public domain · Wikimedia Commons
• Western Massasauga Sistrurus tergeminus RJ Baltierra · CC BY 4.0 · iNaturalist
• Western Meadowlark Sturnella neglecta Romain Boisseau · CC BY-SA 4.0 · iNaturalist
• Western Mudsnake Farancia abacura reinwardtii Dominic · CC BY 4.0 · iNaturalist
• Western Painted Turtle Chrysemys picta bellii Liren Varghese · CC BY 4.0 · iNaturalist
• Western Patch-nosed Snake Salvadora hexalepis Casey H. Richart · CC BY 4.0 · iNaturalist
• Western Pigmy Rattlesnake Sistrurus miliarius streckeri Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Western Pond Turtle Actinemys marmorata John Hibbard · CC BY 4.0 · iNaturalist
• Western Rattlesnake Crotalus oreganusWestern (Pacific) rattlesnake coiled, showing large dark blotches edged in white. NPS Staff · Public domain · Wikimedia Commons
• Western Red-tailed Skink Plestiodon gilberti Megan Ralph · CC0 · Wikimedia Commons
• Western Regal Fritillary Argynnis idalia occidentalis Emily Geest · CC BY 4.0 · iNaturalist
• Western Ribbonsnake Thamnophis proximusWestern ribbon snake with an orange-tinged back stripe and white spot on its head. Sam Kieschnick · CC BY 4.0 · iNaturalist
• Western Ribbonsnake Thamnophis proximus Stephanie Dolrenry · CC BY-SA 4.0 · iNaturalist
• Western Shovel-nosed Snake Sonora occipitalis Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Western Skink Plestiodon skiltonianus Andy Kleinhesselink · CC0 1.0 · iNaturalist
• Western Slender Glass Lizard Ophisaurus attenuatus attenuatus Mike Duran · CC BY 4.0 · iNaturalist
• Western Spadefoot Spea hammondii Ken-ichi Ueda · CC BY 4.0 · iNaturalist
• Western Tanager Piranga ludoviciana jubileej · CC0 1.0 · iNaturalist
• Western Threadsnake Rena humilis cglamb · CC0 1.0 · iNaturalist
• Western Wormsnake Carphophis vermisUnderside view: the plain pink belly of a wormsnake. Kristof Zyskowski · CC BY 4.0 · iNaturalist
• Western Wormsnake Carphophis vermisWestern wormsnake: glossy purplish-black back and pink sides and belly. Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Western Wormsnake Carphophis vermisWestern wormsnake on dark soil: no stripes, spots or bands. Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Western Wormsnake Carphophis vermis Peter Paplanus from St. Louis, Missouri · CC BY 2.0 · Wikimedia Commons
• Whale Shark Rhincodon typus Jonathan Green · CC BY 4.0 · Wikimedia Commons
• Wheel bug Arilus cristatusSide view showing the toothed crest, stout beak and long antennae Andy Reago & Chrissy McClarren · CC BY 2.0 · Wikimedia Commons
• Wheel bug Arilus cristatusAdult on a plant stem holding a captured bumble bee Andy Wilson · CC0 1.0 · iNaturalist
• Wheel bug Arilus cristatusAdult perched on a curved pipe, showing the cogwheel crest Melissa McMasters from Memphis, TN, United States · CC BY 2.0 · Wikimedia Commons
• Wheel bug Arilus cristatusNymph with red-orange abdomen and black legs, no crest yet Seth Wollney · CC BY 4.0 · iNaturalist
• Wheel bug Arilus cristatusDark gray adult on a stone ledge, crest seen from above USFWSmidwest · Public domain · Wikimedia Commons
• Whimbrel Numenius phaeopus hudsonicus sprcrkwild · CC BY 4.0 · iNaturalist
• Whiskered Screech-owl Megascops trichopsis jakeschneider00 · CC BY-SA 4.0 · iNaturalist
• White Beach Tiger Beetle Cicindela dorsalis media Mike Ostrowski · CC BY-SA 4.0 · iNaturalist
• White Shark Carcharodon carchariasAdult great white side view: conical snout, gray back, white underside Elias Levy · CC BY 2.0 · Wikimedia Commons
• White Shark Carcharodon carchariasJuvenile rolling at the surface in shallow nearshore water Maranda Hawkins · CC BY 4.0 · iNaturalist
• White Wagtail Motacilla alba Rajan Rao · CC BY 4.0 · iNaturalist
• White-breasted Nuthatch Sitta carolinensis nelsoni Nigel Voaden · CC BY 4.0 · iNaturalist
• White-cheeked Pintail Anas bahamensis Dan Vickers · CC BY 4.0 · iNaturalist
• White-crowned Pigeon Patagioenas leucocephala jrcagle · CC BY 4.0 · iNaturalist
• White-crowned Sparrow Zonotrichia leucophrys Andy Wilson · CC0 1.0 · iNaturalist
• White-eared Hummingbird Basilinna leucotis Joshua Smith · CC0 1.0 · iNaturalist
• White-eyed Vireo Vireo griseus noveboracensis Kevin Achtmeyer · CC0 1.0 · iNaturalist
• White-eyed Vireo Vireo griseus skitterbug · CC BY 4.0 · iNaturalist
• White-faced Ibis Plegadis chihi jubileej · CC0 1.0 · iNaturalist
• White-faced Storm-Petrel Pelagodroma marina JJ Harrison · CC BY-SA 3.0 · Wikimedia Commons
• White-nosed Coati Nasua narica Adam Jackson · CC0 1.0 · iNaturalist
• White-sided Jackrabbit Lepus callotis Favian Flores Medina · CC BY 4.0 · Wikimedia Commons
• White-tailed deer (South Florida) Odocoileus virginianus seminolus James Rogers · CC BY 4.0 · iNaturalist
• White-tailed Hawk Buteo albicaudatus RJ Baltierra · CC BY 4.0 · iNaturalist
• White-tailed Jackrabbit Lepus townsendii pachips · CC BY 4.0 · iNaturalist
• White-tailed Kite Elanus leucurus Jonathan Eisen · CC BY 4.0 · iNaturalist
• White-tailed Kite Elanus leucurus majusculus Jonathan Eisen · CC BY 4.0 · iNaturalist
• White-tailed Ptarmigan Lagopus leucura altipetens Dean Hester · CC BY 4.0 · iNaturalist
• White-throated Sparrow Zonotrichia albicollis Adam Jackson · CC0 1.0 · iNaturalist
• White-throated Swift Aeronautes saxatalis William Walker · CC BY 4.0 · iNaturalist
• White-throated Thrush Turdus assimilis nmoorhatch · CC BY 4.0 · iNaturalist
• White-tipped Dove Leptotila verreauxi Mary Beth Stowe · CC BY 4.0 · iNaturalist
• White-winged Dove Zenaida asiatica crseaquist · CC BY 4.0 · iNaturalist
• White-winged Parakeet Brotogeris versicolurus Paul Bedell · CC BY-SA 4.0 · iNaturalist
• White-winged Scoter Melanitta deglandi Ben · CC0 1.0 · iNaturalist
• White-winged Tern Chlidonias leucopterus Dennis Vollmar · CC BY 4.0 · iNaturalist
• Whitetip reef shark Triaenodon obesus Robin White · CC BY 4.0 · iNaturalist
• Whooper Swan Cygnus cygnus Ryan Donnelly · CC BY 4.0 · iNaturalist
• Whooping Crane Grus americana Jared Shorma · CC BY 4.0 · iNaturalist
• Wild Turkey Meleagris gallopavo Dario Taraborelli · CC0 1.0 · iNaturalist
• Willet Tringa semipalmata Abby Darrah · CC BY 4.0 · iNaturalist
• Willet Tringa semipalmata inornatus Dan Vickers · CC BY 4.0 · iNaturalist
• Willet (Eastern) Tringa semipalmata semipalmata David Knox · CC BY-SA 4.0 · iNaturalist
• Willet (Western) Tringa semipalmata inornata Dan Vickers · CC BY 4.0 · iNaturalist
• Williamson's Sapsucker Sphyrapicus thyroideus Dario Taraborelli · CC0 1.0 · iNaturalist
• Willow Ptarmigan Lagopus lagopus Matt Muir · CC BY 4.0 · iNaturalist
• Wilson's Phalarope Phalaropus tricolor Wendy St. John · CC BY-SA 4.0 · iNaturalist
• Wilson's Plover Anarhynchus wilsonia Rajan Rao · CC BY 4.0 · iNaturalist
• Wilson's Plover Charadrius wilsonia Rajan Rao · CC BY 4.0 · iNaturalist
• Wilson's Snipe Gallinago delicata Rudyard · CC BY 4.0 · iNaturalist
• Wilson's Warbler Cardellina pusilla Steven Lamonde · CC BY 4.0 · iNaturalist
• Wolf spider (Hogna carolinensis) Hogna carolinensisCarolina wolf spider (Hogna carolinensis) at the mouth of its burrow in grass NathanScientific · CC0 · Wikimedia Commons
• Wolf spider (Hogna carolinensis) Hogna carolinensisFemale Carolina wolf spider (Hogna carolinensis) carrying spiderlings on her back Toby · CC BY 4.0 · iNaturalist
• Wolf spider (Tigrosa aspersa) Tigrosa aspersaFemale woodland giant wolf spider (Tigrosa aspersa) among garden plants M. Whitson · CC BY 4.0 · iNaturalist
• Wood Duck Aix sponsa Adrienne van den Beemt · CC BY 4.0 · iNaturalist
• Wood Frog Lithobates sylvaticusWood frog: dark mask through the eye and white upper-lip line. Jackson Kusack · CC0 1.0 · iNaturalist
• Wood Frog Lithobates sylvaticusWood frog resting on soil under a shrub. kaschaller · CC BY 4.0 · iNaturalist
• Wood scorpion Anuroctonus phaiodactylus Dan Fitzgerald (Fitz) · CC0 1.0 · iNaturalist
• Wood Stork Mycteria americana Conway Hawn · CC0 1.0 · iNaturalist
• Wood Thrush Hylocichla mustelina Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Wood Turtle Glyptemys insculpta Annie Weissman · CC BY 4.0 · iNaturalist
• Wood Turtle Glyptemys insculptaAdult in leaf litter, showing its sculpted shell and orange neck and legs. Michael Ellis · CC BY 4.0 · iNaturalist
• Wood Turtle Glyptemys insculptaClose-up of the black head, orange neck and grooved shell plates. Michael Ellis · CC BY 4.0 · iNaturalist
• Wood Turtle Glyptemys insculptaFace-on view showing the orange-scaled front legs. USFWSmidwest · Public domain · Wikimedia Commons
• Woodhouse's Scrub Jay Aphelocoma woodhouseii Daughter Dad · CC BY 4.0 · iNaturalist
• Woodland Striped Whiptail Aspidoscelis inornata Tom Kennedy · CC BY 4.0 · Wikimedia Commons
• Woodlouse Hunter Dysdera crocata Meghan Cassidy · CC BY-SA 4.0 · iNaturalist
• Woolly bear caterpillar (banded woollybear) Pyrrharctia isabellaCaterpillar rolled into a ball, showing stiff bristly hairs andrew2285 · CC0 1.0 · iNaturalist
• Woolly bear caterpillar (banded woollybear) Pyrrharctia isabellaAdult Isabella tiger moth with wings spread, showing hindwings and spotted abdomen Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Woolly bear caterpillar (banded woollybear) Pyrrharctia isabellaCaterpillar on soil, black at both ends with a rusty middle band Gavin Slater · CC BY 4.0 · iNaturalist
• Woolly bear caterpillar (banded woollybear) Pyrrharctia isabellaAdult moth at rest, showing pointed tan forewings with small dark spots Mirko Schoenitz · CC0 1.0 · iNaturalist
• Woolly bear caterpillar (banded woollybear) Pyrrharctia isabellaCaterpillar on a wooden stake above snow in early spring naturalist charlie · CC BY 4.0 · iNaturalist
• Worm Snake Carphophis amoenus ssp Judy Gallagher · CC BY 2.0 · Wikimedia Commons
• Worm-eating Warbler Helmitheros vermivorum Carrie Seltzer · CC BY 4.0 · iNaturalist
• Wrentit Chamaea fasciata Adam Jackson · CC0 1.0 · iNaturalist

X

• Xantus's Hummingbird Basilinna xantusii Caleb Putnam · CC BY-SA 2.0 · Wikimedia Commons
• Xylocopa micansSouthern carpenter bee (Xylocopa micans), an all-black species, feeding on flowers Judy Gallagher · CC BY-SA 4.0 · iNaturalist
• Xylocopa sonorinaValley carpenter bee (Xylocopa sonorina) female, black with bronze-tinted wings Amelia Tauber · CC BY 4.0 · iNaturalist
• Xylocopa sonorinaValley carpenter bee (Xylocopa sonorina) male hovering in mid-air Dario Taraborelli · CC0 1.0 · iNaturalist
• Xylocopa sonorinaValley carpenter bee (Xylocopa sonorina) male, covered in golden hair eastc · CC BY 4.0 · iNaturalist
• Xylocopa virginicaEastern carpenter bee (Xylocopa virginica) on mountain mint: yellow thorax, shiny black abdomen beewonder · CC0 1.0 · iNaturalist

Y

• Yaqui Black-headed Snake Tantilla yaquia Sue Carnahan · CC BY 4.0 · iNaturalist
• Yarrow’s Spiny Lizard Sceloporus jarrovii Tristan A. McKnight · CC BY 4.0 · iNaturalist
• Yellow Bumble Bee Bombus fervidus Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Yellow Grosbeak Pheucticus chrysopeplus Dean Hester · CC BY 4.0 · iNaturalist
• Yellow Mud Turtle Kinosternon flavescens Nick Block · CC BY 4.0 · iNaturalist
• Yellow Rail Coturnicops noveboracensis Dan Vickers · CC BY 4.0 · iNaturalist
• Yellow-banded Bumble Bee Bombus terricola Bernie Paquette · CC BY 4.0 · iNaturalist
• Yellow-bellied Marmot Marmota flaviventris Hunter Hickok · CC BY 4.0 · iNaturalist
• Yellow-bellied Sapsucker Sphyrapicus varius sudomir · CC BY 4.0 · iNaturalist
• Yellow-bellied Watersnake Nerodia erythrogaster Peter Paplanus · CC BY 2.0 · Wikimedia Commons
• Yellow-billed Cuckoo Coccyzus americanus Ryan · CC0 1.0 · iNaturalist
• Yellow-billed Cuckoo (western pop) Coccyzus americanus occidentalis Ryan · CC0 1.0 · iNaturalist
• Yellow-billed Magpie Pica nuttalli Zack Abbey · CC BY 4.0 · iNaturalist
• Yellow-blotched Sawback Graptemys flavimaculata Tom Field · CC BY 4.0 · iNaturalist
• Yellow-breasted Chat Icteria virens Andy Wilson · CC0 1.0 · iNaturalist
• Yellow-breasted Chat Icteria virens auricollis Joshua Smith · CC0 1.0 · iNaturalist
• Yellow-eyed Junco Junco phaeonotus brendanboyd · CC BY 4.0 · iNaturalist
• Yellow-eyed Junco Junco phaeonotus palliatus Paul McClellan · CC BY 4.0 · iNaturalist
• Yellow-faced Grassquit Tiaris olivaceus Damien Wallace · CC0 1.0 · iNaturalist
• Yellow-green Vireo Vireo flavoviridis Adam Jackson · CC0 1.0 · iNaturalist
• Yellow-headed Amazon Amazona oratrix Z. Z · CC BY 4.0 · iNaturalist
• Yellow-headed Blackbird Xanthocephalus xanthocephalus Daughter Dad · CC BY 4.0 · iNaturalist
• Yellow-headed Caracara Milvago chimachima Brian White · CC BY 4.0 · iNaturalist
• Yellow-nosed Cotton Rat Sigmodon ochrognathus James M. Maley · CC BY 4.0 · iNaturalist
• Yellow-rumped Warbler Setophaga coronata Brooke J · CC BY 4.0 · iNaturalist
• Yellow-throated Vireo Vireo flavifrons Chrissy McClarren and Andy Reago · CC0 1.0 · iNaturalist
• Yucatan Vireo Vireo magister dfaulder · CC BY 2.0 · Wikimedia Commons

Z

• Zander Sander lucioperca Lorenz Seebauer · CC BY-SA 4.0 · Wikimedia Commons
• Zebra Jumper Salticus scenicusMale zebra jumping spider (Salticus scenicus) with white bands on a dark body a6475 · CC BY-SA 4.0 · iNaturalist
• Zebra Jumper Salticus scenicus Gavin Slater · CC BY 4.0 · iNaturalist
• Zebra Mussel Dreissena polymorphaCluster of striped mussels attached to a submerged rock askalotl · CC0 1.0 · iNaturalist
• Zebra Mussel Dreissena polymorphaTwo zebra mussels with zigzag stripes attached to a twig Harukano · CC0 1.0 · iNaturalist
• Zebra Mussel Dreissena polymorphaSingle shell beside a push pin, showing its fingernail size USFWSAlaska · Public domain · Wikimedia Commons
• Zebra-tailed Lizard Callisaurus draconoides Nicole · CC BY 4.0 · iNaturalist
• Zenaida Dove Dennis Vollmar · CC BY 4.0 · iNaturalist
• Zone-tailed Hawk Buteo albonotatus Brooke J · CC BY 4.0 · iNaturalist
• Zoropsis (Mediterranean spider) Zoropsis spinimana Lucio Barbano · CC BY-SA 4.0 · Wikimedia Commons