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

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

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, ...

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

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, ...

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

Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...

A little over a month after a wolf living among Yellowstone's most famous wolf pack was illegally killed, Montana wildlife ...

A new study shows how wolves steal kills from cougars in Yellowstone, driving an uneven feeding rivalry and changing cougar ...

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

These rare kills in Washington State have biologists searching for answers. “Everyone always assumes wolves have the upper ...