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Animal hibernation refers to the natural phenomenon in which certain animals enter a state of dormancy during the winter months. This period of reduced metabolic activity allows the animals to conserve energy and survive in harsh conditions when food is scarce. Hibernating animals typically find a sheltered location, such as a burrow or den, where they can safely rest until warmer weather returns. During hibernation, their body temperature drops, heart rate slows down, and breathing becomes shallow. This adaptation enables them to go for extended periods without eating or drinking, relying on stored fat reserves to sustain themselves. Hibernation is a vital survival strategy for many species, helping them to endure the challenges of cold winter climates.