This 2-4 inch toad has numerous varied-colored warts on its back and is whitish with black spots below. They have black and golden eyes with horizontal pupils. The groupings of warts on its back and the shape and location of the glands behind the eyes help to differentiate the American Toad from the closely related Woodhouse’s Toad (Anaxyrus woodhousii).  American Toad can be identified by its call during the mating season in April and May. The advertisement call is a long musical trill lasting from five to thirty seconds. Each male in a chorus calls at a slightly different pitch, and individuals often alternate and overlap calls in a pleasing manner.