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Peromyscus sejugis

Santa Cruz Deermouse

Order: Rodentia
Family: Cricetidae


Conservation Status: Endangered.

Only one mammal, the Santa Cruz Deermouse, is known to be native to Santa Cruz and San Diego Islands in the Gulf of California. However, people have brought cats to Santa Cruz Island, and there, the deeermice tend to stay at the bottom of canyons. They are much more widespread on San Diego Island. Mice from the two islands are the same size, but look slightly different: the noses of the Santa Cruz mice taper less. Both look a lot like Peromyscus maniculatus, but have bigger, longer noses and duller coats.

Also known as:
Santa Cruz Island Mouse

Range: Total Length: 160-197 mm; Tail: 65-94 mm

Range: 14-25 g


Burt, W.H., 1932. Transactions of the San Diego Society of Natural History, 7:171.


Mammal Species of the World

Distribution of Peromyscus sejugis