The
Yosemite toad (
Anaxyrus canorus, formerly
Bufo canorus) is a species of true toad in the family Bufonidae (
Anaxyrus is a genus of toads distributed across North America). Endemic to the Sierra Nevada of California, the species ranges from the montane forests of El Dorado County near Lake Tahoe south to subalpine Fresno County near Tehipite Valley in Kings Canyon. Yosemite toads show a narrow elevational distribution from 6,200 feet to 11,300 feet. They are the most sexually dichromatic anuran in North America, with males and females displaying strikingly divergent patterns and coloration at maturity. Adult toads are long-lived with upper age limits estimated from 15–20 years, likely an adaptation to their seasonal, high-elevation environment. Yosemite toads have declined substantially in distribution and abundance across their restricted range, and are IUCN endangered, soon-to-be ESA threatened, and are a California species of special concern.