Cougars were also found to be moving where they hunt and travel. They avoid areas where wolves hang out. They avoid wolf ...

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

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

Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...

Predators might be ill-reputed for their fearmongering gestures, but from a scientist’s point of view, they are catalysts of transformation. They are the architects of ecosystems. By eliminating what ...