Smithsonian National Museum of Natural History, North American Mammals
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Thomomys bulbivorus

Camas Pocket Gopher

Order: Rodentia
Family: Geomyidae

Image of Thomomys bulbivorus
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Conservation Status: Least Concern.


Like all pocket gophers, Camas Pocket Gophers construct an extensive system of tunnels, each maintaining his or her own. They are intolerant of others except during breeding season, when males enter the tunnels of females. The young--there can be as many as 8 or 9 in a litter, but 4 is more usual--are expelled from the mother's burrow after they are weaned, when they are a little more than a month old. Camas Pocket Gophers eat the roots of fruit and nut trees and many other plants, and consume root crops such as carrots and potatoes, which has resulted in poisoning and trapping campaigns against them.

Also known as:
Camas Rat

Sexual Dimorphism:
Males are larger than females.

Length:
Average: 300 mm males; 270 mm females

Weight:
Average: 457 g males; 344 g females

References:

Richardson, J., 1829.  Fauna boreali-americana; or the zoology of the northern parts of British America: containing descriptions of the objects of natural history collected on the late northern land expeditions, under command of Captain Sir John Franklin, p. 206.  R.N. John Murray, London, 300 pp.

Links:

Mammal Species of the World

Mammalian Species, American Society of Mammalogists' species account

Distribution of Thomomys bulbivorus