58-year-old chimpanzee Boris, key figure in western chimpanzee breeding, dies at Chester Zoo.

Chester Zoo mourns the loss of 58-year-old chimpanzee, Boris, who had been a part of the zoo for over 50 years. Despite daily medication and geriatric care, Boris's condition suddenly worsened, leading to the heartbreaking decision to put him to sleep. A beloved figure at the zoo, Boris played a central role in establishing the international conservation breeding programme for western chimpanzees, siring 22 young.

July 26, 2024
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