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

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

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

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

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's remote “animal boneyard.” Only a few know how to get there, ...

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