Why do some animals hibernate during winter?

Hibernation allows animals to survive the winter when food is scarce and temperatures are low. During hibernation, their metabolic rate, heart rate, and body temperature drop significantly, conserving energy. Species like bears, bats, and groundhogs enter a dormant state, relying on stored fat to sustain them. Insects and amphibians may find shelter underground or beneath leaves to avoid freezing. Hibernation is a remarkable adaptation that enables animals to endure harsh seasonal conditions.