Hibernation
동면
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<speciesfyi-glossary slug="hibernation"></speciesfyi-glossary>Definition
A state of prolonged inactivity and reduced metabolism that allows animals to survive cold winter conditions.
Detailed Explanation
During true hibernation, body temperature drops close to ambient, heart rate falls from hundreds to single-digit beats per minute, and metabolism slows by 95%. Bears enter a lighter torpor — their temperature drops only a few degrees. Hibernating animals accumulate fat reserves in autumn; disrupting hibernation through warm spells can deplete reserves before spring food is available, a significant climate change threat.