Add Yahoo as a preferred source to see more of our stories on Google. Yellowstone National Park is home to some of the largest grizzly bears in North America. But just how big did the biggest one get?

Yellowstone National Park is home to some of the largest grizzly bears in North America. But just how big did the biggest one get? In this video, we break down the size, weight, and incredible stats ...

Timothy Treadwell and his girlfriend Amie Huguenard were killed by a grizzly bear in Alaska's Katmai National Park in 2003, leaving behind a horrifying audio recording described as the 'worst ever mad ...

Alaska officials hope to protect a struggling caribou herd & bring back a critical subsistence hunt. Critics say the culling program isn't supported by available science.

Based on true events, Grizzly Night is a terrifying survival thriller that follows a rookie park ranger thrust into the fight of her life when Glacier National Park becomes the scene of deadly grizzly ...

As spring unfolds in the Rockies, hungry bears emerge from dens, signaling the season's change and highlighting the need for caution while exploring their habitats.

As a kid, Jason Baldes knew full well something was missing from the prairies around his home: there were no buffalo to hunt. Today, he's aiming to change that ...

From a giant venomous centipede to a tiny but horrendous worm - here are some of the Amazon's most deadly animals ...

Big Daddy was in Tokyo to cut a new strategic Canada-Japan deal yesterday. Before that he was taking selfies on the tarmac in Australia. Another deal there. And he went to India, too, rekindling ...

Biologists working in the northern part of the park reported their first grizzly bear sighting of the season on March 9. The ...