This frog was on a trail in Great Falls Park near the Potomac River last Saturday. Like the eastern American toad (Bufo americanus) featured in this post, this one too was quite well camouflaged. If it hadn't hopped to get out of our way, we wouldn't have noticed it.
It was a Fowler's toad (Bufo fowleri). The 2 Bufo species are separated from each other, in addition to other characteristics, by the number of warts in their dorsal spots: 1 or 2 in B. americanus, 3 or more in B. fowleri (White & White, Amphibians and Reptiles of Delmarva, 2002). Three reddish warts are visible in the dorsal spots of this specimen.
Also like the eastern American toad of the previous post, once I picked up this Fowler's toad, it sat calmly in my palm and didn't attempt to get away as long as we didn't touch it. Interesting creatures these toads are.