Chase Dellwo, who was 26 at the time, was hunting with his brother in the Montana backcountry when he unknowingly stumbled into a sleeping male grizzly weighing around 400lb.

Chase Dellwo, then 26, was hunting with his brother in Montana backcountry when he unknowingly walked right into a 400lb ...

Chase Dellwo, 26, was hunting in Montana backcountry when he unknowingly walked within three feet of a sleeping grizzly bear - and his grandmother's advice saved his life ...

Chase Dellwo, then 26, was hunting with his brother in Montana backcountry when he unknowingly walked right into a 400lb ...

Chase Dellwo was hunting with his brother in Montana when he stumbled upon a 400lb male grizzly bear that was sleeping - but ...

Chase Dellwo was hunting in Montana when he stumbled across a 400lb male grizzly bear - and within seconds, he was lying on ...

The story of wolves in Yellowstone National Park is one of the most successful—and scrutinized—wildlife restoration projects ...

An onlooker at a national park wisely kept their distance while observing other tourists getting dangerously close to a large ...

There's a dark underbelly in Yellowstone and two retired rangers are telling all, like the “Yellowstone River and the Hippie Cannibal" story about ...

A coyote in Yellowstone was lucky to escape after it got a little too close to a pack of wolves feasting on a bison carcass, ...

Yellowstone is famous for its grizzlies – with miles of forest to roam and plenty to eat, these bears reach some monstrous ...

Though it's winter in Yellowstone National Park, the fight for survival is still running as hot as ever. There’s likely not an animal that’s better at the long game than the wolf, especially when it ...