Previous research on the effect of wolves on the food web has been criticized, raising questions about the predator’s role in ...

Mature elk can run 40 mph when they become so inspired, and recent footage from Yellowstone National Park shows that young elk are likewise fleet of foot when their lives are at stake. The ...

Two of the world's top predators squaring up. Grizzlies and wolves are common in a few ways, and very different in others. Both are predators, using both hunting and scavenging methods to secure their ...

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 ...

On four separate occasions, Wolf 907F seized power as the alpha female leader of the Junction Butte Pack in Yellowstone National Park. (National Park Service file photo courtesy of Jeremy ...

This winter saw the most wolves from Yellowstone National Park killed in about a century. That's because states neighboring the park changed hunting rules in an effort to reduce the animals' numbers.

Caught between wolves, mountain lions and grizzly bears, elk are struggling to fend off predators. A trail camera video shows the elk's desperation as ...