No, bears don't actually hibernate

Their winter survival trick is a months-long power-save mode--and scientists think it could help humans, too. This bear woke up like this. Breakthroughs, discoveries, and DIY tips sent six days a week. For many animals that live in cold climates, winter means low-power mode. But no creature is more tied to the image of a long, cozy winter than hibernating bears all snuggled up in their dens.