Hibernation: What's Going on for Grizzly Bears in Winter? - Grizzly bear conservation and protection

Grouse Mountain grizzly bears emerge from long winter's nap

Brown Bears - Bears (U.S. National Park Service)

Science of Bear Hibernation

First Yellowstone bear sighted out of hibernation in park

Skiers encounter grizzly in Kananaskis Country — what you should

Grizzly Bear - San Francisco Zoo & Gardens

The Great Grizzly Bear - Earth Rangers

The Secrets of Bear Hibernation: Nature's Winter Marvels

How a unique adaptation in hibernating bears could innovate

Hibernation: An Essential Survival Method For Bears - Wildlife SOS

Brown Bears - Bears (U.S. National Park Service)

First bear sighting of 2019 in Yellowstone – protect yourself