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 ...

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 ...

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

Claims that wolves have rescued Yellowstone National Park's aspen trees through a "trophic cascade" oversimplify a complex story.

A “brave” little elk calf sprinted to safety — with a pack of wolves close on its heels in Yellowstone National Park, nail-biting video shows. The pack had separated the calf from its mother across ...