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 ...

Lagoon announced it is phasing out the zoo featured in its Wild Kingdom train ride. A public records requests showed that six big cats have already been relocated to a Colorado sanctuary.

Doctors had consulted with specialists from Gir National Park in Gujarat, but all the efforts were unsuccessful. The zoo authorities confirmed that the lion was suffering from kidney failure ...