Yellowstone is grieving after a poacher is believed to have shot and killed a prominent wolf from the park's most famous pack ...

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

Large carnivores are both clashing and coexisting in the western United States. Although wolves dominate cougars and steal ...

A gray wolf was illegally shot and killed just north of Yellowstone National Park last month. According to wolf advocates, wildlife watchers and guides, the wolf mostly lived inside the park and was ...

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

Bison, elk and other animals die in droves in Yellowstone's remote “animal boneyard.” Only a few know how to get there, ...

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, and one wolf chased it ...

The story of wolves in Yellowstone National Park is one of the most successful—and scrutinized—wildlife restoration projects in history. Since their reintroduction in 1995, they have fundamentally ...

In Yellowstone, cougars coexist with wolves by changing what they eat and where they hunt, minimizing conflict driven largely by prey theft.

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 three wolves Utah killed were not symbols or statistics,” writes Eric Clewis with Defenders of Wildlife in an op-ed.

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