The grizzly bear and the polar bear are two large, ferocious mammals belonging to the family Ursidae. At first glance, they seem similar––two cuddly real-life teddy bears. Yet, despite their ...

Let's explore whether grizzly bears and polar bears interact in nature, if they could conceivably mate together, and which of the two is larger.

Also known as grolar bears, the hybrids usually share some characteristic of both species, which only diverged 500,000 to 600,000 years ago.

Traps have been set all over Northeast Washington to help biologists monitor bear populations that have been dwindling and haven't been seen in Northern Cascades since 1996.

A guide in Yellowstone National Park has captured extraordinary footage showing a grizzly bear and her cubs chasing a wolf ...

Yellowstone National Park is cautioning any visiting “tourons” to stay alert and heed its warning signs ahead of annual ...

Biologists are set to capture grizzly bears for research in Yellowstone National Park starting on Monday and are warning ...

A new study found that grizzly bears have had to change their movements across the Canadian Rockies as they avoid human development like coal mines, highways, large reservoirs and towns.