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

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, ...

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk population, which had decimated the plant community, in ...

A man was caught on video approaching and spraying at a Yellowstone wolf pack. Bystanders shouted warnings. Park officials advise staying at least 100 yards away from wolves. Add this to the list of ...

These rare kills in Washington State have biologists searching for answers. “Everyone always assumes wolves have the upper ...

For the past 15 years, Luke Painter has been traveling to the northern range of Yellowstone National Park, where mountains rise and tributaries carve valleys of sage, willows and trees. This includes ...

Yellowstone National Park is the country’s first national park, established in 1872. At the time, wild gray wolves roamed the land, and fossil records show the species’ presence in the region dating ...

Previous research on the effect of wolves on the food web has been criticized, raising questions about the predator’s role in the Yellowstone ecosystem. When you purchase through links on our site, we ...