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they don't

Male and non-pregnant female polar bears do not hibernate, but can switch over to a "Walking Hibernation" when there is not enough food. They slightly lower their body temperature and decreased heart and breathing rates.This physiological act is unique to Polar Bears no other bear can do.

However, in the fall, each pregnant female digs a 'maternity den' and enters a hibernation-like state. She won't leave the den until her babies are ready to follow her while she hunts.

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15y ago

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