The day after two hikers were mauled by a grizzly in Yellowstone, tourists yelled at rangers who were warning them to ...

A grizzly bear and wolf were filmed in a tense standoff over a bison carcass in Yellowstone National Park’s LeHardys Rapids, captivating visitors and wildlife watchers. While both predators postured ...

Sharing is not caring at Yellowstone National Park... in fact, it doesn't appear like it's even an option. Most people would ...

A raw display of power and determination was witnessed by Yellowstone tourists Monday as a wolf battled a much larger grizzly ...

A grey wolf prowls through Yellowstone National Park near Mammoth Hot Springs in Montana. A group of 66 wolves was reintroduced to Idaho and Yellowstone in the late 1990s. They now total 2,800 ...

Three decades after wolves were reintroduced in Yellowstone National Park, aspen stands are recovering, a new analysis suggests. Published in Forest Ecology and Management, the study looks at what ...

In Yellowstone National Park, the reason cats and canines don’t get along is simple — wolves will kill cougars and steal their food. A recently published study that utilized GPS collar data collected ...

Across North America, mountain lions, bears and gray wolves have made a remarkable comeback over the last 50 years. Once nearly exterminated, these animals have been recovering their populations and ...