The southwestern toad or Mexican Madre toad (Anaxyrus mexicanus, formerly Bufo mexicanus ) is a species of toad in the family Bufonidae. It is endemic to north-western Mexico and found on the Sierra Madre Occidental in eastern Sonora and western Chihuahua and south to south-western Durango.Its natural habitats are conifer forests, commonly along low rivers and streams, its breeding habitat. It is a rare species threatened by habitat disturbance, including alterations causing the desiccation of streams and soils.
