Frogs by State

Frogs and Toads of Maryland

Frogs and Toads of Maryland


True Frog – Ranidae

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American Bull Frog (Lithobates catesbeianus)

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Green Frog (Lithobates clamitans)

The Green Frog and American Bullfrog looks the same but the Bullfrog can grow larger and the bull frog lacks dorsal ridges down their back.

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Northern Leopard Frog (Lithobates pipiens)

Pickeral Frog (Lithobates palustris) photo by Brian Gratwicke
Southern Leopard Frog (Lithobates sphenocephalus)

Pickeral Frog, Northern Leopard Frog, and Southern Leopard Frog look very similar to each other because of the spots but the Pickeral frog’s spots are more rectangular than the Leopard Frogs. The Southern Leopard Frog has white dots on its tympanum while the Northern Leopard Frog does not.

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The Wood Frog (Lithobates sylvaticus) is easy to distinguished from the other frogs in the state because of the dark mask around it’s eyes.

Carpenter Frog (Lithobates virgatipes)

The Carpenter Frog is identifiable because of their brown color and two yellow lines that run down their back.

Tree Frog Family – Hylidae

Barking Tree Frog (Hyla gratiosas)

The Barking Tree Frog has rougher skin than all the other tree frogs.

Eastern Gray Tree Frog (Hyla versicolor) and Cope’s Gray Tree Frog (Hyla chrysoscelis)

The Eastern and Gray Tree Frog and the Cope’s Gray Tree Frog are identical besides their calls. They have yellow markings on their hind legs. They can also be green or gray in color.

Here is a video of some Eastern Gray Tree Frog males calling that I took

Green Tree Frog (Hyla cinerea)

Green Tree Frog has a white line down its side and smooth skin.

Spring Peeper (Pseudacris crucifer)

The Spring Peeper is one of the first frogs to call in spring. It has a noticeable X shape on its back.

Mountain Chorus Frog
Mountain Chorus Frog (Pseudacris brachyphona)

The Mountain Chorus looks like the other Chorus Frogs but the markings on the back are different. It has 2 half moons on its back that look like this )(.

 Upland Chorus Frog
Upland Chorus Frog (Pseudacris feriarum)
New Jersey Chorus Frog  (Pseudacris kalmi)

The New Jersey Chorus Frog and Upland Chorus Frog both have 3 stripes down its back but The New Jersey Chorus Frog’s stripes aren’t usually broken and if they are, its only the middle one.

Northern Cricket Frog (Acris crepitans)

The Northern Cricket Frog is the only Cricket Frog in the state. It has no distinct markings on its back which separates it from most of the Chorus Frogs.


True Toad Family – Bufonidae

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American Toads (Anayxrus americanus)

Fowler’s Toad (Anayxrus fowleri)

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


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

Spadefoot Toad Family – Scaphiopodidae

Eastern Spadefoot Toad (Scaphiopus holbrookii)

The Eastern Spadefoot toad is the only Spadefoot toad in the state. If a toad has a spade on its rear foot, then its this toad.

Narrow Mouthed Toad – Microhylidae

Eastern Narrow Mouthed Toad (Gastrophryne carolinensis)

The Eastern Narrow Mouth Toad is the only Narrow Mouth Toad in the state so the pointed narrow head is a key identifying trait.


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