A woman spotted a large black cat in Missouri. She asks a simple question: What cat is this? Commenters infer it could be a black panther.

A mountain lion mauled a five-year-old boy while he was picnicking with his family this past weekend in southern California.

A ranch worker found severed horse legs hanging from trees not too far from the ranch corrals and cabin. Watch it here.

A wildlife photographer captured a series of moments that beautifully illustrate the bond between a mountain lion cub and its mother.

A homeowner spotted one of the most endangered mammals in the U.S., a Florida panther, crossing through his backyard in Naples, Florida.

Research confirms a mountain lion that struggled to stand and walk had the fatal staggering disease. It’s the first case in North America.

A trio of field biologists heard some eerie vocalizations. Turns out, it was a mountain lion. Hear what sound a mountain lion makes here.

A mountain lion got stuck in the courtyard of a southern Arizona hospital, and it wasn’t happy to be there. Here’s what happened.

Did a mountain lion attack a 19-year-old dirt biker last week? Officials say it was a house cat, but the teen says no way.

Have you ever seen a mountain lion on an iceberg? A wildlife photographer took some stunning photos of a cougar in an unlikely place.