The next time you snivel, "I am freezing to death," you might want to consider the wood frog, which withstands such bone-chilling cold in winter that its heart stops beating yet does not die.

You might think the sounds you noticed coming from those wetlands are the distant quacking of ducks. You’d be wrong. Or you might think that evening chorus of chirping along the creek is produced ...

The wood frog survives extreme winter temperatures by freezing solid, with its heart stopping for nearly eight months. It uses its natural antifreeze, a mix of glucose and urine constituents ...