A recently published study that utilized GPS collar data collected over nine years found that interactions between wolves and cougars often revolved around elk.

Cougars were also found to be moving where they hunt and travel. They avoid areas where wolves hang out. They avoid wolf ...

Add Yahoo as a preferred source to see more of our stories on Google. A wolf carries a very young pup by its hindquarters in this image caught by a game camera. A new study shows that contrary to long ...

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, ...

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 ...

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 ...

Scientific research has long assumed gray wolves are non-migratory during springtime, staying anchored to tend to litters of nearly helpless pups. For the first weeks of life, after all, pups are ...