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

Large carnivores are both clashing and coexisting in the western United States. Although wolves dominate cougars and steal their prey, cougars' shift from elk- to deer-heavy diets, paired with a ...

A coyote in Yellowstone was lucky to escape after it got a little too close to a pack of wolves feasting on a bison carcass, ...

Wolves in Yellowstone National Park will sometimes test their predation skills on lone adult bison. But there can be painful consequences. The accompanying footage, captured by Billy Fabian while on a ...

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

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 ...

In Yellowstone, cougars coexist with wolves by changing what they eat and where they hunt, minimizing conflict driven largely by prey theft.

Finding a giant graveyard might be depressing, but the carcasses strangely benefit the ecosystem, providing food to grizzlies ...

A bison lived to fight another day in Yellowstone National Park recently, fending off a wolf with a well-timed kick in the jaw before escaping. Tour guide William Fabian said he saw the “exhausted and ...

A guide in Yellowstone National Park has captured extraordinary footage showing a grizzly bear and her cubs chasing a wolf from they bison carcass they had claimed. But Billy Fabian’s footage also ...