Temba, a chimp at Wellington Zoo, died on Saturday night following surgery after a run in with the alpha male chimp, Marty.
Wellington Zoo posted the news on their Facebook page late last night.
"[Temba] was attended by our veterinary team at The Nest Te Kōhanga and had surgery to repair his leg wounds. Unfortunately, there were complications during the recovery and Temba was euthanised on Saturday night."
They said Temba had an undiagnosed illness which he had likely hidden to keep his place in the hierarchy.
"Chimpanzees have a complex social structure, and they tend to hide symptoms of illness to keep their place in the social structure which means he hadn't shown any outward signs or symptoms of illness beforehand."