It spans from the earliest days of grizzly bear biology in the United States (a field pioneered by the famous Craighead ...

Grizzlies on the loose! In this clip, watch grizzly bears running all over the place in Alaska's Grand Teton National Park!

Other common subspecies include the Eurasian brown bear, the Kodiak bear, and the Syrian brown bear. To understand brown bear vs grizzly bear, it’s necessary to define exactly what a subspecies is.