Temperature Regulation, Hibernation, and Aestivation in the Little Pocket Mouse, Perognathus longimembris

Abstract
The little pocket mouse, Perognathus longimembris, was selected for a study of temperature regulation because (1) it is one of the smallest North American rodents (adult weight, 6.5 to 10 grams); (2) it is a member of the highly specialized family Heteromyidae; (3) it is locally very abundant; (4) it is readily maintained in captivity; and (5) nothing was previously known about its temperature regulation.