The sighting of a possible mountain lion in the city of Rochester has created quite a stir. But with all the excitement, some ...

Video shows a California woman coming face-to-face with a mountain lion during a hike. NBC News' Marissa Parra has more on ...

It’s extremely rare for cougars (also called mountain lions) to attack humans — but it has happened. And now, after a ...

Cortney Rasura was 6 miles into the 8 miles she’d planned to hike on the Gridley Trail in the Los Padres National Forest near ...

Imagine walking a snowy plain, mammoths looming nearby, and knowing enormous cats once prowled in their shadow. These ancient ...

Mountain lions are sometimes called "mountain screamers" due to their incredibly loud, piercing, and surprisingly human-like ...

Crepuscular activity refers to the behavior of animals that are most active during those twilight times just before dark or ...

Animals have long adapted to the ways people move through the world. They skirt around popular hiking trails, avoid busy ...

The male mountain lion, estimated to be 10 months old, was released June 17 by the California Department of Fish and Wildfire into a remote area of the Santa Ana Mountains in Orange County after ...

Residents are on edge after an apex predator was spotted carrying a pet cat through a California neighborhood, video shows. A ...

A young apex predator that was hurt in a car crash recovered enough to return to the California wilderness, officials said.

Montana will largely stay the course on a plan to gradually reduce the statewide mountain lion population by 40%, despite emphatic objections from cat hunters.