From National Geographic:
It’s the ultimate deep freeze: Wood frogs in Alaska have set a record for cold endurance, staying as frozen as your microwave dinner for nearly seven months, a new study says.

Scientists at the University of Alaska Fairbanks discovered that the amphibians survived all those months being chilled to an average temperature of 6°F (-14.6°C), including temperatures as low as 0°F (-18°C).
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