A surgery involving veterinary and human neurologists to remove a chimpanzee's spinal tumor is believed to be the first documented procedure of its kind. It was done on a 34-year-old chimpanzee at Zoo ...

KNOXVILLE, Tenn. — Zoo Knoxville said one of its chimpanzees is recovering well after he underwent historic spinal surgery to remove a tumor. The zoo said 34-year-old Mwelu has had no setbacks, and ...

An adult male chimpanzee is recovering well after undergoing ground-breaking spinal surgery to remove a tumor. Mwelu, 34, a resident at Zoo Knoxville in Tennessee, is 10 days into his recovery ...

KNOXVILLE, Tenn. — A Zoo Knoxville chimpanzee is recovering after a historic spinal surgery to remove a tumor. Workers with Zoo Knoxville said this operation is believed to be the first documented ...

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