Article Photos: Oldest of zoo gorillas turns 56 in central Ohio 1/4

This photo provided by the Columbus Zoo and Aquarium shows 56-year-old Colo posing for a photo as she celebrates her birthday, Saturday, Dec. 22, 2012, at the Columbus Zoo and Aquarium in Columbus, Ohio. Colo is the oldest gorilla in any zoo. She was born at the Columbus Zoo and Aquarium in 1956. (AP Photo/Columbus Zoo and Aquarium, Grahm S. Jones)