A brave bison mother protects her newborn calf from an attacking wolf pack until the rest of the herd arrives to aid in the ...

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

You mess with the calf, you get the herd. It's estimated that around 4,500 bison roam around Yellowstone National Park.

In Yellowstone National Park, Scott Brovsky captured dramatic footage of a grizzly bear being chased away from a bison carcass by a pack of six wolves from the 8 Mile wolf pack. The wolves nipped at ...