The Colorado River Toad or Bufo alvarius, also known as the Sonoran Desert Toad, is a psychoactive toad found in the Southwestern United States and northern Mexico. There are several species of toads which produce venom that has psychoactive properties. The venom of Bufo alvarius contains 5-MeO-DMT and bufotenin, while several others contain only bufotenin. The psychoactivity of 5-MeO-DMT is clearly established and more data is coming to light which suggests that bufotenin is equally psychoactive (both smoked and oral) although somewhat less potent. While dried toad skins are sold by some vendors, there is little benefit to this method as toad venom can be collected without harming the toad.. The Colorado River Toad is carnivorous, eating small rodents, insects, and small reptiles, including other toad species; like many toads, they have a long, sticky tongue which aids them in catching prey. It lives in both desert and semi-arid areas throughout the range of its habitat. They are semi-aquatic and are often found in streams, near springs, and in canals and drainage ditches. They often make their home in rodent's burrows and are nocturnal. The toad generally breeds in small rain pools after the summer showers start; they spend approximately one month as yellowish-brown tadpoles before moving onto the land. They grow to be up to 4-7 inches long.