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

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 ...

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

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 ...

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

Add Yahoo as a preferred source to see more of our stories on Google. A pack of Mexican gray wolves at an Illinois zoo got some special holiday enrichment ahead of Christmas. The Brookfield Zoo ...

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