A new study shows that interactions between wolves and cougars in Yellowstone National Park are driven by wolves stealing ...

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

As cougar and wolf populations recover, clashes between these top predators are inevitable with cougars finding ways to ...

In a new study, a UC Berkeley-led team of biologists observed gray wolves near Yellowstone National Park traveling 20 kilometers or more over rugged, mountainous terrain, with very young pups in tow.

Add Yahoo as a preferred source to see more of our stories on Google. A wolf carries a very young pup by its hindquarters in this image caught by a game camera. A new study shows that contrary to long ...

In April, 1996, newly-graduated biologist Patricia Wyman was mauled to death at her “dream job,” tending captive wolves at ...