The Ussurian tube-nosed bat of Japan joins the polar bear as the only animals known to hibernate in snow. 1:39. ... Photograph by Joel Sartore, National Geographic Photo Ark.

Humans make it through the winter by stocking up on comfort food and firing up the DVR. But hibernation gets a lot more interesting in the animal kingdom, where frogs freeze solid and lemurs live ...

A video has gone viral after a teen posted footage of her two non-responsive hamsters posing the request: "someone tell me if they're dead or hibernating." In the video, which has now been viewed ...

People who sit still for hours have an increased risk of blood clots, but hibernating bears and people with long-term immobility don’t. A key clotting protein appears to be the reason why.