Its blood floods with glucose, acting as natural antifreeze so the wood frog can survive being frozen solid for months.

Across the northern forests of North America, an ordinary-looking brown frog performs one of the most extreme survival feats in the animal kingdom. Each autumn the wood frog burrows into leaf litter, ...

A fancy camera offers new insight into the distinct calls of a springtime male wood frog chorus. By Sabrina Imbler In the winter, the woods of New Hampshire are littered with small, frozen frogs.