There are several creatures that possess a certain tolerance to subzero temperatures, but none as amazing as the Alaskan Wood Frog. This tiny amphibian can survive being almost completely frozen during winter, only to miraculously come back to life as soon as spring arrives.
In winter hibernation, over 60% of the frog's body freezes; it stops breathing and its heart stops beating. Its physical processes like metabolic activity and waste production come to a halt. Wood frogs can survive long winters where temperatures range between -9C to -18C (15.8F to -0.4F).
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