The passengers in the row ahead were sure to have listened with avid interest. They were officers with the California ...

In the wild, the balance between predator and prey is a delicate dance, with each playing a critical role in their ecosystems ...

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

Montana game wardens are seeking information on a mountain lion found dead near mile marker three on the Troy Mine Road south of Troy. An investigation is underway after the lion was found wrapped in ...

Investigators are baffled by the case of somebody killing a mountain lion in Montana, and then cutting off and taking the ...

Zoo staff made the difficult choice to euthanize one of the zoo’s two female mountain lions, Sierra, earlier in the 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, ...

Two buddies set out into canyon country to track down a mountain lion. They end up finding a pair of cougars, but only with ...

The passengers also showed the officers the skull of an endangered sea turtle they were smuggling in a carry-on bag during ...

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. She came to the zoo 17 years ago as an orphaned cub ...

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

Authorities found two stuffed mountain lions and one stuffed wolverine at a Napa County man’s home after his family members ...