A guide in Yellowstone National Park on Monday shared stunning footage showing a black wolf partially obscured by mist as other wolves remained mostly hidden in the background. “This was the ...

Yellowstone National Park never fails to impress when it comes to drama, especially in the high-stakes encounters between ...

The dark fur is rare in Europe due to a reduced genetic diversity, but at least half of the wolf population has black fur in Yellowstone National Park in the United States. Because wolves travel ...

The black wolf’s fur was covered with frost from the long, cold night, but it now was howling right in front of us. What a perfect picture.

For most animal biologists, seeing an all-black variant of their studied species would be a once-in-a-lifetime experience. But in North America, especially in Yellowstone National Park where a large ...

A new study calculates the long-term effects of reintroducing wolves to Yellowstone National Park in the 1990s, which ultimately helped willow shrubs that feed wildlife in stream habitats.

Yellowstone is home to some of North America's most iconic wildlife, including the Big Five. Here's what you need to know ...

But the huge fire of 1988 ultimately produced few large trees. The elimination of Yellowstone's wolves allowed the elk to browse aspens unchecked. Finally, Ripple and Larson decided to look within ...

A biologist turned photographer chronicles the lives of Yellowstone's iconic gray wolves. 4 min read Ronan Donovan is one of six photographers who contributed to National Geographic magazine's ...

Grizzlies, black bears, coyotes ... polarized and complex than those around any other creature in Yellowstone. Beyond the wolf-haters-versus-wolf-lovers tussle, scientists disagree about how ...

It's white and it's small.'' Grizzly bears and wolves are usually the star attractions for wildlife watchers in Yellowstone but this spring, a tiny and exceedingly rare white buffalo calf has ...

The dark fur is rare in Europe due to a reduced genetic diversity, but at least half of the wolf population has black fur in Yellowstone National Park in the United States. Because wolves travel ...