Hibernation and Other Forms of Dormancy

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Creator: Encyclopaedia Britannica Films

Complete Record: A camera study of various animals adjusting to the hardships of their environment during the winter months. Explains that as food becomes scarce and temperatures change, some animals--such as the ground squirrel--go into hibernation, while some-like the spadefoot toad--go into deep sleep called estivation, and others--such as the bear and raccoon--merely sleep for long period of time.

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