The iconic landscape of Yellowstone National Park has witnessed an increase in forest cover, thanks to this wild animal.

New research has demonstrated the powerful impacts the reintroduction of predators can have on an ecosystem. The presence of ...

An iconic apex predator appeared through thick fog like an apparition and cautiously watched a photographer in Yellowstone ...

Footage shows the black wolf with a mystical quality – as other wolves remain mostly hidden – amid steam at a Yellowstone thermal area.

Colorado voters narrowly decided to reintroduce gray wolves to the western part of the state, sparking tensions with ranchers ...

Yellowstone is home to nearly 5,000 bison, which must contend with wolves in the winter, and wolves and grizzly bears during ...

A pack of wolves took down a bison in Yellowstone National Park and attracted a crowd of people — that the rest of the bison herd then charged into.

Park City Institute will present "National Geographic Live! Wild Wolves of Yellowstone" on Friday with Explorer Doug Smith.

A new study has unveiled the far-reaching ecological impact of wolves and other large carnivores in Yellowstone National Park ...

As people gathered on a road in Yellowstone to watch a pack of wolves devour a bison, the buffalo’s herd charged into them ...

A new study reveals the profound ecological effects of wolves and other large carnivores in Yellowstone National Park, showcasing the cascading effects predators can have on ecosystems.