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

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

Though it's winter in Yellowstone National Park, the fight for survival is still running as hot as ever. There’s likely not an animal that’s better at the long game than the wolf, especially when it ...

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

A baby elk outran — and outswam — a wolf pack in Yellowstone National Park, video shows. Screenshot of montanawild_'s Instagram video A “brave” little elk calf sprinted to safety — with a pack of ...

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

Elk are a familiar sight in much of Montana now, but that hasn't always been the case. By the early 1900s, unregulated hunting had led to massive declines in wildlife nationwide. But In Yellowstone, ...