American toad American toad The American toad ("Anaxyrus americanus") is a common species of toad found throughout the eastern United States and Canada. 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". The eggs of the American toad are laid in two strings and can hatch in 2–14 days. When hatched the tadpoles are recognizable by their skinny tails in relation to the size of their black bodies. They may
Cane toad to their common name. The cane toad has many other common names, including "giant toad" and "marine toad"; the former refers to its size, and the latter to the binomial name, "R. marina". It was one of many species described by Linnaeus in his 18th-century work "Systema Naturae" (1758). Linnaeus based the specific epithet "marina" on an illustration by Dutch zoologist Albertus Seba, who mistakenly believed the cane toad to inhabit both terrestrial and marine environments. Other common names include "giant neotropical toad", "Dominican toad", "giant marine toad", and "South American cane toad". In Trinidadian English, they are commonly called