But no creature is more tied to the image of a long, cozy winter than hibernating bears all snuggled up in their dens. This ...

If you thought winter was cold where you live, just imagine how a polar bear must feel! These amazing animals live on coastal ...

For decades, classroom posters have shown cartoon bears snoozing all winter, held up as the classic example of hibernation.

Joanna Lynne Kelley. Photo by Jennifer Feitosa. Growing up in the woods of Santa Cruz, Joanna Lynne Kelley was constantly exposed to the beauty and diversity of nature. Surrounded by the variety of ...

Finding a suitable winter den can determine whether a bear survives months of cold, deep snow, and food scarcity. For pregnant females and mothers with cubs, the choice matters even more, since the ...