Certain characteristics distinguish grizzlies from black bears. The grizzly is larger, both in girth and weight. The grizzly's coat ranges from tawny cinnamon to light brown or even black. A feature also associated with grizzlies is the shoulder hump, and area of well- defined muscle. Another is his dish-shaped face.
Grizzlies hibernate in dens during the winter.
This is when the cubs are born. Emerging from their dens in the spring with one to three cubs, the mothers are very protective. They will not hesitate to charge intruders which they perceive as threatening their cubs. Where to find them Grizzly Bears range throughout Yellowstone but are most often seen in and around the Dunraven Pass area and just past the turn off to Mount Washburn. Another good area is across the Yellowstone River in Hayden Valley and in the Fishing Bridge area.