Frogs by State

Frogs and Toads of Pennsylvania

Frogs and Toads of Pennsylvania


True Frog Family – Ranidae

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American Bull Frog (Rana catesbiana)


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Green Frog (Rana clamitans)

The American Bullfrog and the Green Frog are similar but the American Bullfrog is larger. The Green Frog also has a impartial dorsal ridge while the American Bullfrog does not have one.

Atlantic Coast Leopard Frog (Rana kauffeldi)

The Atlantic Coast Leopard Frog is found in the southeastern corner of the state.

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Northern Leopard Frog (Rana pipiens)

The frog is found throughout the state besides the eastern edge.

The Southern Leopard Frog is found along the eastern coast of the state.

Southern Leopard Frog, Northern Leopard Frog, and Atlantic Coastal Leopard Frog look very similar to each other. The Southern Leopard Frog has the most pointed snout while Atlantic Coastal Leopard Frog is less pointed. The Northern Leopard Frog’s snout is rounded.

The Pickeral Frog looks similar to the Leopard Frogs but it has rectangles on its back.

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Wood Frog (Rana sylvatica)

The Wood Frog is a very easy to identify frog. It has a raccoon like mask around its eyes.

True Frog Family – Hylidae

These two frogs are identical besides their calls and chromosome numbers. These tree frogs are also larger than the ones below. Also note that Gray Tree Frogs are not always gray and can be green. They also have a yellow to orange color on their back legs.

Northern Cricket Frog is the only cricket frog in the state. It does not have any distinct markings on its back.

The Spring Peeper’s call is one of the first sign of spring. For a small frog, it has a loud call. The Spring Peeper has a noticeable X on its back that makes it easy to identify.

New Jersey Chorus Frog (Pseudacris kalmi)

The Midland, Upland, and New Jersey Chorus frogs appear very similar. The Upland Chorus frog’s stripes on their back can be broken while the other two’s stripes are usually not broken besides sometimes the middle. The Midland is located more at the western state line while the Upland lives in more South-central Pennsylvania. New Jersey Cricket Frog is located in the East.


True Toad Family – Bufonidae

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American Toads (Anayxrus americanus)

The Fowler’s Toad and the American Toad look very much a like but there are some differences in the back of the head and on their belly.


The American Toad’s parotid gland is separated from the cranial crest while the Fowler’s Toad’s touches.

The Fowler’s Toad has a clear, white belly while the American Toad’s belly is speckled.

Spadefoot Toad Family – Scaphiopodidae

Eastern Spadefoot Toad (Scaphiopus holbrookii)

The Eastern Spadefoot toad is the only Spadefoot toad in the state. They live most of their life underground.

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