The canyon mouse (Peromyscus crinitus ) is a gray-brown mouse found in many states of the western United States and northern Mexico. Its preferred habitat is arid, rocky desert. It is the only species in the Peromyscus crinitus species group.
Canyon mice eat seeds, green vegetation, and insects. They breed in the spring and summer. Females can produce multiple litters of between two and five young every year. Males do not mate with more than one female, and the homes ranges of females and males overlap. Canyon mice are nocturnal and are active through the year. They usually nest among or below rocks in burrows.