White-tailed Antelope Squirrels can often be seen in western and southwestern deserts, especially in shrubby areas with rocky soil. They do not hibernate, but in cold winter weather several may huddle together in a burrow to keep warm. They breed from February to June, producing litters of 5-14 offspring. The young begin to appear aboveground when they are about six or seven weeks old, and nurse for about two months. Adults eat both plant matter and insects.

Links:
Mammal Species of the World
Click here for The American Society of Mammalogists species account