Frogs and Toads of Rhode Island
The American Bullfrog, Lithobates catesbeianus, and the Green Frog, Lithobates clamitans, 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 Coastal Leopard Frog (Lithobates kauffeldi)
Northern Leopard Frog (Lithobates pipiens)
Pickeral Frog (Lithobates palustris)
Pickeral Frog (Lithobates palustris) and Northern Leopard Frog (Lithobates pipiens) / Atlantic Coastal Leopard Frog look very similar to each other because of the spots but the Pickeral frog’s spots are more rectangular than the Northern Leopard / Atlantic Coastal Frog. Now for Atlantic Coast Leopard Frog vs Northern Leopard Frog, the Atlantic Coastal Frog has more white in its tympanum than the Northern.
The Wood Frog, Lithobates sylvaticus, is easily identifiable from its raccoon mask around its eyes.
The Spring Peeper, Pseudacris crucifer, is the only tree frog in Rhode Island so it is easy to identify.
American Toad (Anaxyrus americanus)
Fowler’s Toad (Anaxyrus fowleri)
This is the best pic to tell apart the Fowler’s and American Toad.
Eastern Spadefoot Toad, Scaphiopus holbrookii, is the only spadefoot toad in the state so just look for the toad with a spade on its rear feet.