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

A new study reveals the profound ecological effects of wolves and other large carnivores in Yellowstone National Park, ...

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

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

Editor's note: This story is the first in a series about wolf reintroduction in Colorado. GRAND COUNTY, Colo. — Snow swirled in the air as the small crowd of spectators congregated on a patch of state ...

Without a natural predator, they overgrazed the land, he said, and pointed to the success of wolves in Yellowstone in restoring biodiversity. "We want wolves here because we know the ecological ...

In one clip, a black wolf and a gray wolf slowly crossed a stream in the forest, the water nearly up to their bellies, before ...

Two rare black wolves were captured on a wildlife camera wading through a stream in Poland over the summer, according to a newly released video by the SAVE Wildlife Conservation Fund Poland. Newsweek ...