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

If a wolf pack can bring down a bison, or locate a dead or dying bison, the carcass can sustain the pack for days.

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

"Leave the wild animals alone!" Yellowstone tourist suffers consequences after getting too close to bison: 'I don't feel bad, ...

No one in their right mind would try to break up a fight between two moose. In case you were wondering, moose often battle with one another over territory or a potential mate, and though many would ...

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 ...

AMES, Iowa — The leader of the Yellowstone Gray Wolf Restoration Project will discuss the controversial reintroduction of wolves to Yellowstone National Park during a talk at Iowa State University.

Soil, geology and archaeological sites had to be analyzed, as well as impacts to wildlife, as the National Park Service wrote an environmental assessment for a new North Entrance road.

Tourists traveling by plane over Yellowstone National Park on Thursday were treated to a rare and magnificent view of the world’s tallest active geyser shooting steam 400-plus feet skyward.

A film about the cougars that live in Yellowstone National Park and the biologists who study them is set to be screened at the Center for the Arts tonight.