EnviroFunFact

A wood frog. Photo courtesy: LearnNC

Some amphibians freeze up for the winter and thaw out in the spring. The wood frog, for instance, boosts its blood sugar by nearly 400% before the frost hits the ground. This glucose solution rounds out the frog's cells and when it begins to freeze, they stretch out seamlessly, keeping the frog alive.

Here's an interesting 3 minute video that shows how they do it.