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

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

Visitors in Yellowstone National Park witnessed a rare and tense encounter as a grizzly bear and wolf vied for a bison carcass along the Yellowstone River. Though the animals came close, they avoided ...

A grizzly bear and wolf were filmed in a tense standoff over a bison carcass in Yellowstone National Park’s LeHardys Rapids, captivating visitors and wildlife watchers. While both predators postured ...

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

This settles it … I need to go to Yellowstone one day. If you read my blog, then you’re very well aware that there’s a very small amount of stuff (like the stock market and sports betting) that makes ...

A photographer has captured a strikingly graphic image that reveals the raw dynamics at play during winter in Yellowstone National Park. From Big Sky Wildlife, aka Scott Brovsky, via Instagram on Jan.

A new study shows that interactions between wolves and cougars in Yellowstone National Park are driven by wolves stealing prey killed by cougars and that shifts in cougar diets to smaller prey help ...