The American toad may be distinguished from the closely related Fowler’s toad by the presence of enlarged warts on the lower section of each leg (tibia); only one or two large warts within each large dark spot on the back; usually dark mottling on the chest; more pronounced cranial crests; and parotoid glands that are either separate from the cranial crest or connected to it by a short spur. On this little one it's hard to tell unless you can get a full clear back shot of it.