COLUMBUS, Ohio — The first gorilla born in a zoo is turning 56 and celebrating the birthday with some special treats at her central Ohio home.

The Association of Zoos and Aquariums says the female western lowland gorilla named Colo is the oldest gorilla in any zoo. She was born at the Columbus Zoo and Aquarium in 1956.

The zoo planned to mark Colo's birthday Saturday with a specially prepared cake for her and other gifts, including her favorite food — tomatoes. The zoo planned to include guests in the fun by having them sing “Happy Birthday.”

Colo is a mother of three, and her family tree includes more than two dozen descendants living at zoos across the country.

First Published December 22, 2012, 6:07 p.m.