A video taken in Yellowstone National Park shows a lone female wolf competing with two grizzly bears for the rights to a bison carcass.

Yellowstone's Junction Butte wolf pack failed in a recent attempt to kill a bison, but the pack appears to be thriving again after the death of its former alpha female, Wolf 907F.

A Wyoming-based guide has captured dramatic footage showing an elk running for its life while being chased by a wolf in Yellowstone National ... others gray or white) typically need the strength ...

The endangered gray wolf was a crucial part of the Yellowstone Wolf Project, an ambitious reintroduction plan nearly 20 years in the making. Shortly after nightfall on January 12, 1995 ...

Standing at the edge of a bluff overlooking the Lamar River in Yellowstone National Park, TJ Ammond stared through binoculars at hundreds of buffalo dotting the verdant valley below.

Those who want to learn about Yellowstone wildlife in a more controlled environment should take a break from the park and head to the Grizzly & Wolf Discovery Center. This nonprofit (that's also ...