Juveniles become territorial in July or August. At high densities, many individuals may be wounded in territorial disputes. Mating takes place during late February to March. Lactation takes place in April to May, and the young are weaned after about 35 days. The young emerge in May, and most males disperse in June.
First reproduction takes place in yearlings.
The range of the round-tailed ground squirrel abuts that of the similar Mohave ground squirrel. Homing in the antelope and round-tailed ground squirrels. J. Ariz. Acad. Bradley, W. G. 1968b. Food habits of the antelope ground squirrel in southern Nevada.