COLUMBUS, Ohio (AP) — She is a mother of three, grandmother of 16, great-grandmother of 12 and great-great-grandmother of three. She recently had surgery to remove a malignant tumor, but doctors say she’s doing well. She’s Colo, the nation’s oldest living gorilla, and she turned 60 on Thursday at the Columbus Zoo and Aquarium. Colo was the first gorilla in the world born in a zoo and has surpassed the usual life expectancy of captive gorillas by two decades.