| Like other spiny pocket mice, Salvin's dig burrows and carry seeds to their underground nests, using their fur-lined cheek pouches as carrying cases. The name "pocket mouse" comes from these external pouches, or pockets, a trait shared by all members of the family Heteromyidae. Salvin's Spiny Pocket Mice are widespread along the Pacific Coast of Central America. In Mexico, they are often found in the same dry, topical, lowland forests as Painted Spiny Pocket Mice. Their range extends into the adjacent mountains to an elevation of about 1,500 meters.
Spiny Pocket Mice have long, narrow, hind feet with five toes. The three center toes are much longer than the two side toes, and they have one spoon-shaped claw that they probably use for grooming. They also groom by sand-bathing, rolling in the sand to dust and clean their coats. They can get all the moisture they need from eating seeds: captive Salvin's fed only bird seed did not lose weight or show other signs of needing drinking water.
Head and Body: 103-140 mm; Tail: 97-143 mm
Thomas, O., 1893. Annals and Magazine of Natural History, ser. 6, 11:331.
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