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

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

Once the bear reached the area where the wolves were, the wolves must’ve smelled him ... then all chaos broke out.” ...

Sharing is not caring at Yellowstone National Park... in fact, it doesn't appear like it's even an option. Most people would ...

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 ...

Yellowstone National Park is nature's Thunderdome from the Mad Max series. It's a full-on fight to the death among America's ...

Two hikers were injured in a bear attack near Biscuit Basin in Yellowstone. The NPS believes a sow and cubs were involved.

A flare up of a disease that’s especially lethal to wolf pups took a toll on Wyoming and Yellowstone National Park wolf ...

A playful Yellowstone wolf pup is giving weekend vibes after he was caught on camera making off with a grizzly bear warning sign—and turning the post into a chew toy. Wolves just wanna have fun.