21. Frogs
Some frogs have an astonishing survival trick: they enter a deep state of torpor or even freeze solid during frigid winters. Their bodies virtually shut down, with organs and blood encased in ice, allowing them to “sleep” through the harshest months.
When spring arrives and temperatures rise, these remarkable amphibians thaw out and resume their normal activities as if nothing happened. It’s an extreme, yet effective way to weather the cold. National Geographic