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 ...

With reports of a big cat roaming the streets of Rochester, it is important to be prepared just in case you cross paths with ...

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 ...

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.

Mountain lions are more than just mysterious predators—they’re vital to California’s ecosystems. As apex predators, they help keep deer populations in check, which in turn protects plant life from ...