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, ...

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

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

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

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

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 ...

According to the zoo, more than $5.3 million was raised to build a new habitat for mountain lions and jaguars. Here's what ...

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The Phoenix Zoo is a great place to enjoy nature without your little ones dying of boredom. There are four trails that wind through the numerous habitats populated by more than 3,000 animals ...

Navigate backward to interact with the calendar and select a date. Press the question mark key to get the keyboard shortcuts for changing dates. Phoenix Zoo $25 $500+ ...