| Hopi chipmunks are naturally timid, and even individuals born in captivity never become tame. Like Panamint chipmunks, they live in southwestern pinyon-juniper forests and nest in rock crevices or piles of broken rock. They are fast and sure-footed on the sheer rock faces of canyons and buttes. They often climb into shrubs to get seeds, but never eat there: either they take the food to the safety of their den, or perch on a boulder or other lookout where they can eat but at the same time watch for hawks or other predators.
Females are slightly larger than males.
Hoffmeister, D.F., and L.S. Ellis. Geographic variation in Eutamias quadrivittatus with comments on the taxonomy of other Arizonan chipmunks, p. 656. The Southwestern Naturalist, 24:655-665.
Mammal Species of the World (opens in a new window).
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