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Wyoming Frogs and Toads: Pictures & ID Guide

Last checked November 3, 2026 against official sources.

On this page
  1. All 11 frogs and toads
  2. Lookalikes
  3. When they are active
  4. How to report
  5. About this list
  6. Sources

This page lists 11 species: all from Wyoming Game and Fish Department's Amphibians in Wyoming. 1 is nonnative.

All 11 frogs and toads

From A to Z.

American Bullfrog
Photo: Paul Danese · CC BY-SA 4.0 · Wikimedia Commons · resized

American Bullfrog

Lithobates catesbeianus

Not stated Nonnative

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Size
Usually 6 to 8 inches long (NCWRC); can reach 8 inches or more and weigh over 2 pounds (CDFW). Missouri gives 3.5 to 6 inches snout to vent, occasionally to 8.75.
How to recognize it
  • No ridge (dorsolateral fold) down each side of the back
  • Large round eardrum: about twice the eye in males, about eye-sized in females
  • Fully webbed hind feet, longest toe extends past the webbing

Full American Bullfrog guide

No confirmed photo of Boreal Chorus Frog

Boreal Chorus Frog

Pseudacris maculata

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
No confirmed photo of Columbia Spotted Frog

Columbia Spotted Frog

Rana luteiventris

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Conservation
Wyoming Species of Greatest Conservation Need (NSS3, Tier II)
Great Basin Spadefoot
Photo: RJ Baltierra · CC BY 4.0 · iNaturalist

Great Basin Spadefoot

Spea intermontana

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Conservation
Wyoming Species of Greatest Conservation Need (NSS4, Tier II)
Great Plains Toad
Photo: Fyn Kynd · CC BY-SA 4.0 · iNaturalist · resized

Great Plains Toad

Anaxyrus cognatus

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Conservation
Wyoming Species of Greatest Conservation Need (NSSU, Tier II)
Northern Leopard Frog
Photo: Colin Croft · CC BY 4.0 · iNaturalist

Northern Leopard Frog

Lithobates pipiens

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Conservation
Wyoming Species of Greatest Conservation Need (NSS4, Tier II)
No confirmed photo of Plains Spadefoot

Plains Spadefoot

Spea bombifrons

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Conservation
Wyoming Species of Greatest Conservation Need (NSS4, Tier II)
No confirmed photo of Rocky Mountain Toad

Rocky Mountain Toad

Anaxyrus woodhousii woodhousii

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
No confirmed photo of Western Toad

Western Toad

Anaxyrus boreas

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Conservation
Wyoming Species of Greatest Conservation Need (NSS1, Tier I)
Wood Frog
Photo: Jackson Kusack · CC0 1.0 · iNaturalist

Wood Frog

Lithobates sylvaticus

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Size
Adults 1.5 to 2.75 inches snout to vent, occasionally to 3.5 inches; females are larger than males.
How to recognize it
  • Dark eye mask: SREL calls it the only frog in the Southeast with such a facial pattern
  • Distinct ridge of skin (dorsolateral fold) down each side of the back to the groin
  • Call: a rapid, hoarse 'waaaduck' like a quacking duck, repeated three or four times
Conservation
Wyoming Species of Greatest Conservation Need (NSS2, Tier II)

Full Wood Frog guide

No confirmed photo of Wyoming Toad

Wyoming Toad

Anaxyrus baxteri

Not stated

Venom
No official source we use states whether this animal is venomous. That does not mean it is harmless: do not handle it.
Where in Wyoming
Floodplains, ponds, and small seepage lakes in the shortgrass prairie of the Laramie basin. Wyoming Game and Fish Department, Nongame Section
Conservation
Wyoming Species of Greatest Conservation Need (NSS1, Tier I); federally endangered

Frogs and Toads people confuse

Wood frog or Columbia spotted frog (Alaska)?

Wood frog
Photo: Jackson Kusack · CC0 1.0 · iNaturalist

Wood frog Not stated

No confirmed photo of Columbia spotted frog (Alaska)

Columbia spotted frog (Alaska) Not stated

ADF&G: slightly bumpy skin covered with irregular black spots and salmon-red undersides of the legs and belly; in Alaska it is mostly confined to Southeast river corridors. The wood frog has a dark eye mask and a light lip line and a uniformly cream underside.

Photos show typical adults; individuals vary. Never get close to compare.

When frogs and toads are active in Wyoming

Records of frogs and toads in Wyoming peak in July to August. They show when people record frogs and toads, not how many there are (about month bars).

105 records of frogs and toads in Wyoming by month (GBIF, CC0 and CC BY records).

How to report

Report mountain lion sightings to Wyoming Game and Fish at 1-877-WGFD-TIP (or the non-emergency police line). Rare or interesting nongame birds, mammals, amphibians and reptiles can be reported to the WGFD Nongame Section through its "Report an Observation" form. Wyoming Game and Fish Department

About this list

The species list comes from Amphibians in Wyoming (WGFD species list, data from WYNDD Data Explorer) (Wyoming Game and Fish Department, Last modified 01-23-2023; data 01-23-2024).

Venom labels come only from official sources and link to them; "Not stated" never means harmless. How labels work.

"Nonnative" and "Invasive" follow the wording of the source list. See invasive species in Wyoming.

Sources

  1. Nongame Wildlife. Wyoming Game and Fish Department. no page date shown; checked November 3, 2026.
  2. Amphibians in Wyoming (species list). Wyoming Game and Fish Department. Last modified on 01-23-2023; checked November 3, 2026.
  3. Atlas of Birds, Mammals, Amphibians, and Reptiles in Wyoming. Wyoming Game and Fish Department, Nongame Section. December 2021; checked November 3, 2026.
  4. Mountain Lions in Wyoming. Wyoming Game and Fish Department. no page date shown; checked November 3, 2026.
    Quoted passages (1)
    “Please report sightings to Game and Fish at 1-877-WGFD-TIP or the non-emergency Police Department phone.”
  5. GBIF.org occurrence records, human observations licensed CC0 1.0 or CC BY 4.0 only, accessed November 3, 2026. The datasets behind these counts are listed on our Sources page.