Most individuals have dark, rounded spots on the back, each of which encircles one or two warts.
A light line may run down the middle of the back. The throat and belly are whitish or yellowish with black or gray spotting. Fowler's Toads usually have three or more warts within each of the larger spots on their backs, and often have unmarked, whitish undersides. Their short, nasal-sounding breeding call is quite unlike the long, musical trill of the Eastern American Toad. These two toad species may interbreed.