Wolves usually rely on cooperation to survive. Hunting large prey such as elk typically involves multiple pack members working together to isolate and exhaust an animal. That reality makes one ...

A new scientific review challenges the headline-grabbing claim that Yellowstone’s returning wolves triggered one of the strongest trophic cascades on Earth. Researchers found that the reported 1,500% ...

Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...

A new study documents the complex interactions between cougars and gray wolves in Yellowstone National Park and finds their ...

The Yellowstone bubble Wolf 1331F’s fate was unusual only in that she made it so far north. When wolves leave the park, they die — often, quickly. Yellowstone’s roughly 100 wolves are among the most ...

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 ...

Gary Lee shares more stories from his trip to Yellowstone as well as photos of wildlife, including a rare wolf sighting.

This winter saw the most wolves from Yellowstone National Park killed in about a century. That's because states neighboring the park changed hunting rules in an effort to reduce the animals' numbers.

Tourists visiting Yellowstone National Park on October 6 were left stunned after witnessing a man walk straight toward a wild wolf pack in what authorities are calling a highly dangerous and reckless ...

When gray wolves returned to Yellowstone National Park, the public heard a simple story: predators came back, balance ...