When gray wolves returned to Yellowstone National Park, the public heard a simple story: predators came back, balance ...

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, ...

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 ...

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

The question of how many wolves a region can sustain without tipping the balance against prey herds, livestock operations, ...

Large carnivores are both clashing and coexisting in the western United States. Although wolves dominate cougars and steal their prey, cougars' shift from elk- to deer-heavy diets, paired with a ...

T he wolves arrived in May of last year, just days after Paul Roen had driven his cattle back up to their summer pasture in ...

ORR, Minn. – The first clue was the flock of ravens. Tom Gable spotted the birds while driving to work. He pulled over and saw what they were circling: a rib cage poking out of the fresh dusting of ...

The California Department of Fish and Wildlife is gearing up to capture various wild animals in Northern California and outfit them with GPS collars to better track them, the agency said. Deer, elk ...