| Perote Ground Squirrels are active for nine months of the year. They emerge from hibernation in March, have litters during the summer, and enter hibernation by November. In late July, most of the adult females in one population were pregnant. Some had as many as six or seven embryos, but the mean litter size is four. There were a few juveniles; it is possible that some females have two litters a year. By mid-October, most of the squirrels still aboveground were young - and fat - and ready to hibernate.
Many Perote Ground Squirrels live on the plains around wheat and cornfields, and are threatened by habitat destruction and fragmentation as the land used for agriculture grows. Others, in a nearby sandy semi-desert, are not currently at risk except from predators, which include weasels and domestic dogs.
Total Length: 243-261 mm; Tail: 57-78 mm
Merriam, C.H., 1893. Proceedings of the Biological Society of Washington, 8: 131,.
Mammal Species of the World (opens in a new window).
Mammalian Species, American Society of Mammalogists' species account (opens in a new window).