Frogs by State

Frogs and Toads of Utah

Frogs and Toads of Utah

Frogs

True Frog Family – Ranidae

American Bullfrog (Lithobates catesbeianus)

The American Bullfrog is the largest native frog in the United States. There is no dorsal ridge that runs down its back on the American Bullfrog. This is the distinguishable characteristics of the frog.

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Green Frog (Lithobates clamitans)

The Green Frog looks very much like the American Bullfrog but it’s a tad smaller. It has a dorsal ridge that runs down its back but they are incomplete and do not reach all the way.

Columbia Spotted Frog

The Columbia Spotted Frog has small spots all over their body that are often lighter on the inside.

Northern Leopard Frog (Lithobates pipiens)

The Northern Leopard Frog has fairly large spots all over their body. The dorsal ridge is nearly complete.

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Lowland Leopard Frog (Rana yavapaiensis) by Brian Gratwicke

The Lowland Leopard Frog is stockier and paler than the Northern Leopard Frog.

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Relict Leopard Frog

The Relict Leopard Frog hasn’t been seen in the state since the 50s so it is probably extinct but who knows. The dorsal folds on the frog end well before the groin. It also has shorter legs than the Northern Leopard Frog.

Tree Frog Family – Hylidae

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Canyon Tree Frog

The Canyon Tree Frog lacks a stripe that runs through its eye.

Pacific Tree Frog

Pacific Tree Frog has the stripe through its eye but no stripes down its back.

Boreal Chorus Frog (Pseudacris maculata)

The Boreal Chorus Frog has a stripe through its eye and three down its back.

Toads

True Toad Family – Bufonidae

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Arizona Toad

The Arizona Toad is found in the southwest corner of the state. The toad has weak or no cranial crests.

Great Plains Toad

The Great Plains Toad has a well defined cranial crest that forms a V shape.

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Red Spotted Toad (Anaxyrus punctatus)

The Red Spotted Toad has a small flattened head and body with weak or no cranial crest. It is found in the southern part of the state.

Western Toad

The Western Toad has no cranial crests and has a white line down its back.

Woodhouse’s Toad (Anaxyrus woodhousii)

The Woodhouse’s Toad has well defined cranial crest that form opposing L shapes.

Spadefoot Toad Family – Scaphiopodidae

Great Basin Spadefoot Toad

The Great Basin Spadefoot toad has glandular boss between its eyes.

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Mexican Spadefoot Toad (Spea multiplicata)

The Mexican Spadefoot Toad has no boss between its eyes.

Plains Spadefoot Toad (Spea bombifrons)

The Plains Spadefoot Toad has a bony boss between its eyes.

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