Smithsonian National Museum of Natural History, North American Mammals
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Ammospermophilus harrisii

Harris's Antelope Squirrel

Order: Rodentia
Family: Sciuridae

Image of Ammospermophilus harrisii
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Conservation Status: Least Concern.


Extreme heat does not deter Harris's Antelope Squirrel from vigorous daytime activity. It is agile, scampering over sharp-spined cholla cactus without being pricked, and may sit on top of a cactus to look around. Antelope squirrels dig burrows, usually under desert shrubs such as mesquite, creosotebush, or palo verde, and eat mainly fruit and cactus seeds. Trapping studies indicate the species is found in low densities that vary seasonally. The squirrels are active year-round. They typically breed in December or January and have a litter of 5-9 young about a month later.

Also known as:
Harris's Spermophile, Marmot Squirrel, Gray-tailed Antelope Squirrel, Yuma Antelope Ground Squirrel

Sexual Dimorphism:
None

Length:
Average: 238 mm
Range: 216-267 mm

Weight:
Average: 122 g

References:

Audubon, J. J., and J. Bachman, 1854.  The quadrupeds of North America, p. 267.  V.G. Audubon, New York, 3:1-348.

Links:

Mammal Species of the World

Mammalian Species, American Society of Mammalogists' species account

Distribution of Ammospermophilus harrisii

Image of Ammospermophilus harrisii
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