how do small animals not get frostbite when they walk around on snow and ice all day?
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They have a very high metabolism. They generate a huge amount of heat relative to their size, and have a much higher pulse and respiration rate to keep that warmth generating. If you scaled a mouse up to the size of an elephant, it would quickly die of hyperthermia, i.e. getting so hot it dies. Similarly, if you made an elephant the size of a mouse, it would quickly freeze to death
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