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, ...

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

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

In Yellowstone National Park — where gray wolves were reintroduced starting in 1995 — researchers have gone back and forth on whether the restoration of wolves has impacted the ecosystem. The idea is ...

After being wiped out in California for nearly a century, the gray wolf has been making a comeback in the state, in a change that's been celebrated by conservationists and wildlife lovers. But as ...

Across North America, mountain lions, bears and gray wolves have made a remarkable comeback over the last 50 years. Once nearly exterminated, these animals have been recovering their populations and ...