This frog freezes solid

A frog freezes solid and clocks back in for spring.

Wood frogs can survive whole-body freezing for weeks to months. During the freeze, about 65-70% of their total body water becomes ice outside the cells, while liver-made glucose helps cells hold onto water and avoid freezing inside. When spring arrives, the frog thaws and its heart, brain, and legs come back online. 12

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