Smithsonian National Museum of Natural History, North American Mammals
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Peromyscus keeni

Northwestern Deermouse

Order: Rodentia
Family: Cricetidae

Image of Peromyscus keeni
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Conservation Status: Least Concern.

Keen's Deermouse is the most common deermouse in the Pacific Northwest. It inhabits rainy, mild climate zones at higher elevations than the closely-related North American Deermouse (Peromyscus maniculatus), and prefers areas where the forest canopy is somewhat open. Observers report that it is very good at climbing and jumping. It is often a pest in rural areas, especially in winter, because it readily moves into buildings.

Also known as:
White-footed Mouse, Deermouse

Average: 210 mm
Range: 181-236 mm

Range: 10-30 g


Merriam, C.H. 1897. Descrptions of five new rodents from the roast region of Alaska. Proceedings of the Biological Society of Washington, 11:221-223.


Mammal Species of the World

Distribution of Peromyscus keeni