Three young orphaned mountain lion cubs are recovering well after their recent rescue.  The Oakland Zoo (@oaklandzoo) ...

While big cats on a plane may sound like the setup to a bad action movie, the idea became reality when the Birmingham Zoo was ...

The Phoenix Zoo lost one of its longtime residents this week. Sierra, a mountain lion, was humanely euthanized due to ...

The zoo said zookeepers and veterinary staff made the "difficult decision" to put down mountain lion Sierra earlier this week ...

The Phoenix Zoo lost its beloved mountain lion, Sierra, who was humanely euthanized this week after dealing with advanced renal failure. The Reid Park Zoo had to humanely euthanize their African lion, ...

Some people believe they've seen mountain lions, or cougars, in the South Bend region over the years. But could they be like sightings of Bigfoot?

Phoenix Zoo's mountain lion, Sierra, dies After 17 long years at the Phoenix Zoo, Sierra the mountain lion was humanely euthanized after experiencing renal failure, the zoo said on Feb. 27.

The state-of-the-art space is dedicated to showcasing and caring for some of Arizona’s most elusive native predators.

A mountain lion cub at the Oakland Zoo is getting to play in new spaces, according to the zoo.On Tuesday, February 25, the Oakland Zoo published footage of Briar, a rescued mountain lion cub, playing ...

Zoo staff made the difficult choice to euthanize one of the zoo’s two female mountain lions, Sierra, earlier in the week. Officials said 17-year-old Sierra was suffering from advanced kidney ...

Meredith Tinsley said she was told by zoo officials not to report the animal's drowning, or an eagle that went missing, both of which occurred in about 2009.