Sleeping Through the Winter: Hibernation
Description
When winter arrives, many animals enter a deep sleep called hibernation to survive the cold. During hibernation, their heartbeat and breathing slow down, and they use very little energy. Bears, bats, and groundhogs are famous hibernators, but even some frogs and snakes do it too! Before winter, they eat lots of food to build fat that keeps them warm. Learn how animals prepare for hibernation, what happens to their bodies while they rest, and why this amazing survival skill helps them live through freezing months.
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