Oldest zoo gorilla set to have biopsy before 60th birthday

Photo via Columbus Zoo and Aquarium

POWELL, Ohio (AP) – The oldest known gorilla living in a zoo, a female named Colo, is slated to undergo a surgical biopsy sometime soon ahead of her 60th birthday on Dec. 22.

The Columbus Zoo and Aquarium in Ohio says veterinarians have been monitoring a mass under Colo’s arm that recently started causing her discomfort, so they want to take tissue samples to determine the cause and possible treatment. She’ll also be getting a thorough medical check-up.

The procedure involves anesthesia, making it more risky. But zoo officials say they’re cautiously optimistic that they’ll be celebrating with her on her birthday.

Colo will remain off-exhibit while she is observed after the surgery.

Colo was the first gorilla born in a zoo. She has surpassed the usual life expectancy by two decades.

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