Columbus Zoo’s Colo will undergo treatment to examine mass under her arm

Colo the gorilla (CREDIT: Columbus Zoo and Aquarium)

POWELL (WCMH) — The Columbus Zoo and Aquarium says Colo the gorilla will undergo a “comprehensive” medical examination to examine a mass that zoo staff observed under one of her arms.

Colo, who is almost 60, is the oldest gorilla currently living at a zoo. Columbus Zoo staff say the mass under the gorilla’s arm has been making her “noticeably uncomfortable.”

Colo the gorilla (CREDIT: Columbus Zoo and Aquarium)
Colo the gorilla (CREDIT: Columbus Zoo and Aquarium)

Zoo staff plan to conduct a biopsy on tissue from the mass. Colo will be under anesthesia for the surgery, which does carry some risk. Zoo staff said in a press release that the risk of ignoring the mass is greater than the risk of examining it.

The zoo says “a highly trained and experienced team will conduct the procedure, including three full-time veterinarians, two full-time veterinary technicians, a cardiologist, an anesthesiologist and an ultrasound technician from Ohio Health, and a veterinary surgeon from MedVet.” provides commenting to allow for constructive discussion on the stories we cover. In order to comment here, you acknowledge you have read and agreed to our Terms of Service. Commenters who violate these terms, including use of vulgar language or racial slurs, will be banned. Please be respectful of the opinions of others and keep the conversation on topic and civil. If you see an inappropriate comment, please flag it for our moderators to review.

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