The Colorado River toad is sometimes called the Sonoran Desert toad. It is three to seven inches long and is the largest native toad in the United States. It is olive green to dark brown in color. It has smooth, shiny skin covered in warts. Its belly is cream-colored and it has one to two warts on the corners of its mouth and large raised warts on its rear legs. Its call is a low-pitched hoot.
Ten Facts about Colorado River Toad
- They grow to be up to 4-7 inches long.
- The Colorado River Toad is carnivorous, eating small rodents, insects, and small reptiles and other toad species; like many toads, they have a long, sticky tongue which aids them in catching prey.
- The Colorado River toad can be found in and around the Sonoran Desert in California and in Arizona south to Mexico.
- The Colorado River toad lives in desert and semi-arid areas. It is also found in arid grasslands and woodlands. It is semi-aquatic and usually lives near large streams.
- Mating occurs from May to July.
- There can be as many as 8,000 eggs in a strand.
- The tadpoles hatch within two to twelve days.
- The Colorado River toad is nocturnal and stays underground during the heat of the day.
- When a Colorado River toad is threatened, it will secrete a milky-white hallucinogenic toxin from the parotoid glands under its jaw.
- The poison, which is secreted when the toad is molested, irritates the eyes and mucous membranes of many predators.