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 and Reid Park Zoo in Tucson are both dealing with the loss of longtime residents. The Phoenix Zoo lost its beloved mountain lion, Sierra, who was humanely euthanized this week after ...

The film franchise mainly revolves about a pride of lions who oversee a large swath of African savanna as their «kingdom» known as the Pride Lands, with their leader Simba watching over it ...