Frogs and Toads of South Carolina
South Carolina is home to a rich variety of frogs from a few different families.
The American Bullfrog is the largest frog in the North America. It looks very similar to the Green Frog but the dorsal ridge wraps around the tympanum while the Green Frog’s dorsal ridge is incomplete and does not extend all the way to its rear. The American Bullfrog is also very similar to the Pig Frog but the Pig Frog has bolder spots / stripes on the back of its thighs while the Bullfrog has light spots.
River Frog does not have a dorsal ridge which is a key identification characteristic. Its skin is also a lot more rough and wrinkly than another true frogs.
The Southern Leopard Frog has large spots on its body. The skin is smooth.
Wood Frog (Lithobates sylvaticus) is a very easy to identify because of their mask around their face. They can vary in color from brown, red, and silver.
Carolina Gopher Frog is a subspecies of the Gopher frog. The dorsal ridge of the frog is nearly complete.
Carpenter Frog is identifiable because of their brown color and two yellow lines that run down their back.
Cricket Frogs – Acris
The Cricket Frogs look really similar but there’s a few ways to tell them apart. The Southern Cricket Frog has a more pointed snout while the Northern Cricket Frog has a more blunt snout. The Southern Cricket Frog doesn’t have as much webbing on the back legs as the Northern Cricket Frog.
Tree Frogs – Hyla
Cope’s Gray Tree Frog and Eastern Gray Tree Frog are identical besides their calls.
The Gray Tree Frogs, Pinewoods Frog, and the Bird-Voiced Frog look very much a like. The difference is the coloration on the inner thigh. Cope’s Gray Tree Frog has brighter orange-yellow color on the thigh while the Bird-Voiced Frog is more greenish-yellow. The Pinewoods Frog has dots / spots on the inner thigh.
Pine Barrons Tree Frog is identifiable because of its purple stripe from its eye down its side.
The Green Tree Frog, Squirrel Tree Frog, and Barking Tree Frog are all very similar. The Barking Tree Frog has much rougher skin than the others. The Green Tree Frog has a white line down its side.
Chorus Frogs – Pseudacris
Mountain Chorus Frog can be identified by the marking on its back. The mark looks like )(.
The Spring Peeper is a tiny chorus frog. It has a distinct X shape on its back.
The Southern Chorus Frog is the darkest of all the Chorus Frogs. It has three stripes that can be broken or even spots.
The Upland Chorus Frog has three stripes down its back. The stripes are often broken.
Brimley’s Chorus Frog has a line that runs through the eye and down its side. It has spots on its chest.
Little Grass frog has a line that runs through the eye and down its side. There are no spots on its chest.
Ornate Chorus Frog has a line that runs through the eye and down its side. The line can often be broken.
The Oak Toad is the most easily identifiable toad out of the group of four. It is the smallest of the group and has a light line down its back. The Oak Toad also has orange on the bottom of its feet. The remaining three species of toads in South Carolina are a lot harder to distinguish between. To identify the differences, you have to look at the top of the head. The Southern Toad has knobs on the back of its head. The Fowler’s Toad’s parotid gland touches its postorbital ridge around its eye while the American Toads’s parotid gland does not touch or connected to it by a spur. Here’s an easy map I found that helps me.
The Eastern Spadetoad is the only spadefoot toad in the state. They have a keratonized sheath on their rear feet that helps them dig.
The Eastern Narrow Mouthed Toad is the only narrowed mouth toad in the state. Their heads are narrow and pointed.