Yellowstone has long been a mecca for scientists studying how predators affect everything from elk grazing to vegetation ...

In 1987, officials began the reintroduction of wolves into Yellowstone, kicking off a wolf management program that saw great ...

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk... What is the legacy of Yellowstone wolves 30 years after ...

Scientists investigated Yellowstone's famous “ripple effect” and reveal that the impact of wolves on willow trees may have ...

The gray wolf was officially removed from the Endangered Species Act's "threatened" list Friday after three decades -- a decision that has stoked controversy among environmentalists and ranchers. It ...

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 ...

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 ...