"At 28 years old, she was the oldest known reproducing female grizzly bear in the Greater Yellowstone Ecosystem," Cooley said ...

A female with two young cubs gently nudges an ... Alberta set out to look for grizzly bears in the Rocky Mountain wilderness, they knew that the odds were not in their favour.

He knew grizzly bears well enough to expect this one to be at his heels and, glancing over his shoulder, he saw the furious bear scrambling for purchase in the soft earth as she heaved her hulk up the ...

The National Park Service on Wednesday reported fresh grizzly tracks have been spotted in the northern section of Yellowstone ...