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

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

Rangers at Yellowstone National Park are reportedly trying to solve the mystery of what happened to a well-known female wolf ...

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

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk population, which had decimated the plant community, in ...

The restoration of gray wolves in Yellowstone National Park has helped revive an aspen tree population unique to the region, a new study has found. Quaking aspen, one of the few deciduous tree species ...