The Colorado River toad, also known as the Sonoran Desert toad, is found in northern Mexico and the southwestern United States. Its toxin, as an exudate of glands within the skin, contains 5-MeO-DMT and bufotenin.
The American toad is a common species of toad found throughout the eastern United States and Canada. It is divided into three subspecies—the eastern American toad, the dwarf American toad, and the rare Hudson Bay toad. Recent taxonomic treatments place this species in the genus Anaxyrus instead of Bufo.
Samuel Washington Woodhouse was an American surgeon, explorer and naturalist.
The western toad is a large toad species, between 5.6 and 13 cm long, native to western North America. A. boreas is frequently encountered during the wet season on roads, or near water at other times. It can jump a considerable distance for a toad. Breeding occurs between March and July in mountainous areas, and as early as January in lower-elevation regions. The female lays up to 17,000 eggs stuck together in strings that adhere to vegetation and other objects along water edges.
The red-spotted toad is a toad in the family Bufonidae found in the southwestern United States and northwestern Mexico.
The Texas toad is a species of medium-sized toad that occurs in the southern United States and northern Mexico. It breeds in temporary water pools after heavy rains.
Woodhouse's toad is a medium-sized true toad native to the United States and Mexico. There are three recognized subspecies. A. woodhousii tends to hybridize with Anaxyrus americanus where their ranges overlap.
The boreal toad is a subspecies of the western toad. They are commonly found in the Southern Rocky Mountains and in recent, their population has been on the decline due to an emerging amphibian disease, chytrid fungus. The boreal toad is currently listed as an endangered species by Colorado and New Mexico. It is known in Colorado as the only alpine species of toad.
Fowler's toad is a species of toad in the family Bufonidae. The species is native to North America, where it occurs in much of the eastern United States and parts of adjacent Canada. It was previously considered a subspecies of Woodhouse's toad.
The North American green toad, Anaxyrus debilis, also known by its old name Bufo debilis, is a species of toad found in the southwestern United States in the states of Arizona, New Mexico, Colorado, Kansas, and Texas, as well as in northern Mexico in the states of Tamaulipas, San Luis Potosí, Durango, and Zacatecas. It is commonly called green toad.
The Great Plains toad, Anaxyrus cognatus, is a relatively large species of true toad native to central North America.
The Canadian toad is a species of toad that ranges from the prairie regions of central Canada south to parts of the United States upper midwest. It belongs to the family Bufonidae, the "true" toads. Its specific name is derived from the Latin word hemiophrys, meaning eyebrow, which refers to its pronounced cranial crest between and behind the eye. Anaxyrus hemiophrys displays the typical toad characteristics, they lack a tail and teeth, they have horizontal pupils and their dry skin is thick and warty.
The Arizona toad is a species of toad in the family Bufonidae. It is endemic to the southwestern United States, where its natural habitats are temperate lowland forests, rivers and streams, swamps, freshwater marshes, freshwater springs, ponds, open excavations, irrigated land, and seasonally flooded agricultural land.
Wyoming is home to 12 amphibian species and 22 species of reptiles.
