When one of the world’s leading mountain lion researchers viewed the now-famous video of a snarling cougar following a terrified hiker in Utah, the scene was eerily familiar.

A runner in Colorado fought and killed an 80-pound mountain lion that attacked him on a nature trail in the foothills of the Rocky Mountains, wildlife officials said.

An airplane approaching a rural Idaho airport had to abort its initial landing after a mountain lion was spotted on the runway.

WILDLIFE WATCHING -- Just as prey species are getting a little spring relief from winter, a new threat has shown up on the block: Grizzlies are emerging from their dens in the Priest Lake region. Snowshoers and snowmobilers can get a little creeped out scoping...

PREDATORS -- Mountain Lions in Yellowstone National Park appear to be maintaining their population in the wake of wolf reintroduction and a 60 percent reduction in the number of elk, wildlife researchers say. Their study is using DNA analysis of scat and hair, along with...

HUNTING -- He didn't fill his elk tag this season, but muzzleloader-hunter Todd Klement says he bagged the trophy of a lifetime, and in a sense, the trophy of his dreams. "This female about 80-pounds stalked me not because I was human but because I...

Barking at bears, romping through the forest, sniffing for poaching evidence, getting petted by a child and maybe cooling off with a swim in the Pend Oreille River.... It’s all in a good day’s work for Jax, a 1-year-old Karelian bear dog employed by the Washington Department of Fish and Wildlife.

WILDLIFE -- In this video, a mountain lion caught in a bobcat trap is released without being tranquilized by two Utah Wildlife Resources staffers. This is gutsy work, considering the speed, power and agility of a cougar. It's reality worth watching. Covering the eyes of...