What Animals Hibernate?

Animals that achieve true hibernation, which is an inactive, near-death state characterized by low body temperature and slow heart rate and breathing, include bats, hedgehogs and certain species of rodents such as ground squirrels, hamsters, marmots and hazel mice. Animals that achieve a less intense state of dormancy that is commonly called hibernation include bears and other mammals, as well as various species of reptiles, amphibians and fish.

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