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, ...

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 ...

Their mother was hunted while nursing, according to Phoenix Zoo, so wildlife officials needed to find a home for the two sisters and five other cubs. “It has been a pleasure to see them grow ...