A grizzly spotted out wandering in Yellowstone National Park on Monday might be up from hibernation incredibly early or awake incredibly late. “This ...

When a short clip of a man facing down five Yellowstone wolves started bouncing around social media, most people had the same reaction: this guy is crazy and lucky to be alive. But according to Mike, ...

Yellowstone National Park biologists have been busy counting noses (and beaks), recording sightings, conflicts and concerns for bear management, wolves and birds. They have compiled their work done in ...

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% ...

Wolves usually rely on cooperation to survive. Hunting large prey such as elk typically involves multiple pack members ...

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 ...

Large carnivores are both clashing and coexisting in the western United States. Although wolves dominate cougars and steal their prey, cougars' shift from elk- to deer-heavy diets, paired with a ...

From catching Yosemite’s Firefall to biking a car-free Going-to-the-Sun Road, these national park experiences only happen ...