The American toad (Anaxyrus americanus ) is a common species of toad found throughout Canada and the eastern United States. It is divided into three subspecies: the eastern American toad (A. a. americanus ), the dwarf American toad (A. a. charlesmithi ) and the rare Hudson Bay toad (A. a. copei ). Recent taxonomic treatments place this species in the genus Anaxyrus instead of Bufo.