New Mexico snakes: ID chart
61 snakes, 12 venomous (listed first). Last checked November 3, 2026.
The 12 venomous snakes come first: Arizona Black Rattlesnake, Banded Rock Rattlesnake, Eastern Black-tailed Rattlesnake, Mojave Rattlesnake, Mottled Rock Rattlesnake, New Mexico Ridge-nosed Rattlesnake, Prairie Rattlesnake, Sidewinder Rattlesnake, Tiger Rattlesnake, Western Black-tailed Rattlesnake, Western Coral Snake, Western Diamond-backed Rattlesnake, Western Massasauga. The rest follow from A to Z, each with a photo where we have one and a short note on where it lives in New Mexico. The chart prints on letter or A4 paper; on screen, open any name on the New Mexico snakes page for photos, range and sources.
Banded Rock Rattlesnake
Crotalus lepidus klauberi
Venomous
Eastern Black-tailed Rattlesnake
Crotalus ornatus
Venomous
Mojave Rattlesnake
Crotalus scutulatus scutulatus
Venomous
Mottled Rock Rattlesnake
Crotalus lepidus lepidus
Venomous
New Mexico Ridge-nosed Rattlesnake
Crotalus willardi obscurus
Venomous
Tiger Rattlesnake
Crotalus tigris
Venomous
Western Black-tailed Rattlesnake
Crotalus molossus molossus
Venomous
Western Coral Snake
Micruroides euryxanthus euryxanthus
Venomous
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Western Massasauga
Sistrurus tergeminus
Venomous
Arid Land Ribbonsnake
Thamnophis proximus diabolicus
Not stated
Big Bend Patchnose Snake
Salvadora hexalepis deserticola
Not stated
Black-necked Gartersnake
Thamnophis cyrtopsis cyrtopsis
Not stated
California Kingsnake
Lampropeltis californiae
Non-venomous
Chihuahuan Black-headed Snake
Tantilla wilcoxi
Not stated
Coachwhip
Coluber flagellum
Non-venomous
Desert Nightsnake
Hypsiglena chlorophaea
Not stated
Desert Striped Whipsnake
Masticophis taeniatus taeniatus
Not stated
Eastern Hognose Snake
Heterodon platirhinos
Not stated
Gophersnake
Pituophis catenifer
Non-venomous
Gray-banded Kingsnake
Lampropeltis alterna
Non-venomous
Great Plains Rat Snake
Pantherophis emoryi
Non-venomous
Green Rat Snake
Senticolis triaspis intermedia
Non-venomous
Knobloch's Mountain Kingsnake
Lampropeltis knoblochi
Non-venomous
Lined Snake
Tropidoclonion lineatum
Not stated
Marcy's Checkered Gartersnake
Thamnophis marcianus marcianus
Not stated
Mexican Black-headed Snake
Tantilla atriceps
Not stated
Mexican Hog-nosed Snake
Heterodon kennerlyi
Not stated
Mountain Patchnose Snake
Salvadora grahamiae grahamiae
Non-venomous
Narrow-headed Gartersnake
Thamnophis rufipunctatus
Not stated
New Mexico Gartersnake
Thamnophis sirtalis dorsalis
Not stated
North American Racer
Coluber constrictor
Not stated
Northern Mexican Gartersnake
Thamnophis eques megalops
Not stated
Plains Black-headed Snake
Tantilla nigriceps
Not stated
Plains Gartersnake
Thamnophis radix
Not stated
Pyro Mountain Kingsnake
Lampropeltis pyromelana
Non-venomous
Ringneck Snake
Diadophis punctatus
Not stated
Smith's Black-headed Snake
Tantilla hobartsmithi
Not stated
Smooth Greensnake
Opheodrys vernalis blanchardi
Not stated
Texas Blind Snake
Rena dulcis
Not stated
Texas Long-nosed Snake
Rhinocheilus lecontei
Not stated
Trans-Pecos Rat Snake
Bogertophis subocularis subocularis
Non-venomous
Wandering Gartersnake
Thamnophis elegans
Not stated
Yellow-bellied watersnake
Nerodia erythrogaster transversa
Non-venomous
A picture cannot confirm what an animal is or that it is safe. Never handle a wild animal. Sources: BISON-M (Biota Information System of New Mexico) species search export: taxonomic name "Serpentes" (New Mexico Department of Wildlife); Reptiles - Carlsbad Caverns National Park (National Park Service); Reptiles - White Sands National Park (National Park Service); New Mexico Snakes: Information for New Mexico Homeowners (Circular 541) (College of ACES); Bites and Stings (New Mexico Poison & Drug Information Center); BISON-M Species Booklet 030400: Yellow-bellied watersnake (BISON-M); and others listed on the web page. stateswildlife.com/new-mexico/snakes/