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Description"The Mohave Ground Squirrel occupies a relatively tiny part of the Mohave Desert and is rarely seen, since it spends more than half the year underground in a burrow. Estivation—the hot-weather equivalent of hibernation—and hibernation last from mid-summer through winter, which lets them avoid the hottest, driest, and coldest months, when the least food is available. The amount of weight gained and lost by these animals annually is remarkable. Before ""powering down,"" an individual may gain about 200 g, and then lose it all before emerging. With their large, time-sensitive energy needs, the animals are susceptible to prolonged drought, when plants produce less food. Under extreme drought conditions, Mohave Ground Squirrel may not reproduce. The squirrels are omnivorous but selective about what they eat seasonally. One of their preferred foods is the seed produced by the Joshua tree. These trees are defended against other squirrels."
Mammal Species of the World
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