Fowler’s Toads (Bufo fowleri) are difficult to tell apart from Eastern American Toads (both can be found in Maryland). One difference is that a Fowler’s toad never has a spotted belly. Its ventral surface (belly) is usually whitish and without spots aside from the dark spot in the throat area.
Also, Fowler’s Toads have three or more warts in each of the largest dark spots.
This Fowler’s toad was another species I recorded for the Maryland Amphibians and Reptiles Atlas (MARA) for 2011.