![]() There are currently only three known extant populations, one on Dana Point and the two largest on Marine Corps Base Camp Pendleton. They were believed to be extinct in 1972, but were rediscovered in 1993, and federally listed as endangered in 1994. The Pacific pocket mouse has historically occupied marine terraces and alluvial plains along the southern California coast and has been typically associated with open patches of sandy soils. ![]() They exhibit typical behaviors of heteromyid rodents including sand bathing to keep pelage clean and healthy, collecting seeds in external cheek pouches, and caching of seeds below ground and within burrow systems for sustenance throughout the year. The Pacific pocket mouse is one of 19 subspecies of the little pocket mice in the Heteromyid family and weighs an average of only 6 grams (0.04 oz). ![]() ![]() This video shows a Pacific pocket mouse (Perognathus longimembris pacificus) sandbathing at Marine Corps Base Camp Pendleton in 2015. ![]()
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