Critics have pointed to the possible danger of bringing the massive mammals back to a state with a vastly higher population ...

A new clip out of Yellowstone offers a rare look at the brutal reality of kleptoparasitism in the backcountry. Watch a pack ...

Unusual predator standoff: Video shows grizzlies and wolves confronting each other over a bison carcass in Yellowstone’s LeHardys Rapids, with aggressive displays but no injuries. Why it’s rare: ...

The day after two hikers were mauled by a grizzly in Yellowstone, tourists yelled at rangers who were warning them to ...

California lawmakers on Tuesday moved forward on a bill that could lead to the re-introduction of grizzly bears to the state, more than a century after the quarter-ton predators were hunted into local ...

A Yellowstone grizzly bear with a cub. (Frank van Manen/U.S. Geological Survey photo) SB 1305 would require California to study the feasibility of reintroducing grizzly bears. Lawmakers question ...

Are grizzly attacks on the rise? After a deadly week in Glacier and another attack in Yellowstone, expert Chris Servheen ...

LEWISTOWN — Grizzly numbers have grown significantly in areas considered “bear country,” such as Glacier and Yellowstone national parks and the Bob Marshall Wilderness. The population of this ...

A grizzly bear targets vulnerable caribou calves while a herd moves across Alaska’s tundra, showing how predators exploit moments when young animals lag behind. Caribou rely on speed, herd behavior, ...

A raw display of power and determination was witnessed by Yellowstone tourists Monday as a wolf battled a much larger grizzly ...