Colo, World's Oldest Gorilla, Turns 60 (Photos)

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By Christine Lunsford
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colo oldest gorilla

(Image credit: Grahm S. Jones/Columbus Zoo and Aquarium)

Colo enjoys her birthday cake on her 58th birthday.

Life-long resident

colo oldest gorilla

(Image credit: Grahm S. Jones/Columbus Zoo and Aquarium)

Colo has lived at the Columbus Zoo longer than any other animal in the zoo's collection.

Tasty treats

colo oldest gorilla

(Image credit: Grahm S. Jones/Columbus Zoo and Aquarium)

Colo celebrates her 59th birthday at the Columbus Zoo and Aquarium on Dec. 22, 2015, amid colorful decorations and various treats.

Christine Lunsford