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

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

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

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

A new peer-reviewed study reports that claims of a “world-leading” trophic cascade in Yellowstone National Park are not supported, citing problems with the methods used in earlier research. A newly pu ...

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

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, ...

As cougar and wolf populations recover, clashes between these top predators are inevitable with cougars finding ways to ...

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, ...

The wolves were killed Jan. 9 by the Utah Department of Agriculture and Food, said DWR spokesperson Faith Jolley, a move ...

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