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: ...

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

The roars of a grizzly echoed from a riverbank in Yellowstone National Park on Sunday, as it postured with a wolf over a ...

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

Visitors and photographers in Yellowstone National Park recently captured rare footage of grizzly bears and wolves clashing over a drowned bison carcass in the Yellowstone River. Experts say such ...