Woodhouse's Toad (Anaxyrus woodhousii)
Description: 2½ - 4 inches. Woodhouse's Toads are gray, tan, brown, or yellowish in color, with dark spots on the back that usually contain three or more warts. There is a white stripe that runs down the center of the back. The belly is white with only a single black spot on the chest. There are two large glands on the back of the head (parotoid glands), that are pressed tightly against the small ridge behind each eye (cranial crest).
Similar Species: Fowler's Toads are similar in appearance, but are only found in Southeast Iowa. The parotoid glands on American Toads are either completely separated from the cranial crest, or connected to it by a small spur.