Bison, elk and other animals die in droves in Yellowstone National Park’s remote “animal boneyard.” Their carcasses provide a ...

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

A new study has found that cougars are making slight changes to their diets in order to avoid encounters with wolves. In ...

Though it's winter in Yellowstone National Park, the fight for survival is still running as hot as ever. There’s likely not an animal that’s better at the long game than the wolf, especially when it ...

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 ...

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

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

A new study shows how wolves steal kills from cougars in Yellowstone, driving an uneven feeding rivalry and changing cougar ...

Some species are at their most active in winter, whether they’re flying, feeding, or mating. From elephant seals in ...

It didn't come as a surprise to researchers that the re-introduction of wolves in certain parts of the northern U.S. would reduce deer and elk herds, and thus reduce automobile accidents with those ...