Wildlife officials are investigating the suspicious death of a gray wolf near Yellowstone National Park. The killing is ...

A new study documents the complex interactions between cougars and gray wolves in Yellowstone National Park and finds their ...

A hunter illegally killed a 'rising star' wolf and threw away its GPS collar.

A gray wolf was illegally shot and killed just north of Yellowstone National Park last month. According to wolf advocates, ...

A celebrity wolf was illegally killed near Yellowstone National Park, with a reward for tips climbing past $31,000.

Another wolf from Yellowstone National Park's famous Junction Butte Pack killed in Montana is being investigated as a ...

The story of wolves in Yellowstone National Park is one of the most successful—and scrutinized—wildlife restoration projects ...

Investigation began after the wolf's research collar was found in a tree.

A new study shows that interactions between wolves and cougars in Yellowstone National Park are driven by wolves stealing ...

A coyote in Yellowstone was lucky to escape after it got a little too close to a pack of wolves feasting on a bison carcass, ...

Tourists visiting Yellowstone National Park on October 6 were left stunned after witnessing a man walk straight toward a wild wolf pack in what authorities are calling a highly dangerous and reckless ...