Photo: Marcel Burkhard
Colorado River Toad, Bufo alvarius
Sonoran Toad, Bufo alvarius
Photo: National Park Service
The Colorado River Toad, Bufo alvarius, is also known as the Sonoran Desert Toad. They will eat about any small insect, reptile, or rodent they can catch. 
Photo: National Park Service
Department of the Interior
Site: Saguaro National Park
Site: Saguaro National Park
The natural range of the Colorado River Toad, is Southwest United States, and Northwest, Mexico.
This toad is on the endangered list of California, making possession there illegal. This toad produces a defensive excretion from glands in it's skin, that is considered a controlled substance in the US, because of it's hallucinogenic affects when smoked.
