The distinction between prey and predators is just the tip of the iceberg of hierarchy in Yellowstone National Park.

Yellowstone is grieving after a poacher is believed to have shot and killed a prominent wolf from the park's most famous pack ...

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

A study investigated thousands of kill sites that provided valuable information about the hunting and feeding behaviors of both predators.

A gray wolf was illegally shot and killed just north of Yellowstone National Park last month. According to wolf advocates, ...

Large carnivores are both clashing and coexisting in the western United States. Although wolves dominate cougars and steal ...

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, ...

In Yellowstone, cougars coexist with wolves by changing what they eat and where they hunt, minimizing conflict driven largely by prey theft.

The story of wolves in Yellowstone National Park is one of the most successful—and scrutinized—wildlife restoration projects in history. Since their reintroduction in 1995, they have fundamentally ...

A coyote in Yellowstone was lucky to escape after it got a little too close to a pack of wolves feasting on a bison carcass, and one wolf chased it ...

Bison, elk and other animals die in droves in Yellowstone's remote “animal boneyard.” Only a few know how to get there, ...

The three wolves Utah killed were not symbols or statistics,” writes Eric Clewis with Defenders of Wildlife in an op-ed.