Japanese zookeepers believe they have solved the mystery of how a gibbon became pregnant despite living alone in her cage.
source https://www.cnn.com/2023/02/09/asia/japan-zoo-gibbon-pregnancy-mystery-intl-hnk/index.html
source https://www.cnn.com/2023/02/09/asia/japan-zoo-gibbon-pregnancy-mystery-intl-hnk/index.html
A gibbon who lived alone in her cage had a baby. Japanese zookeepers finally know how
![A gibbon who lived alone in her cage had a baby. Japanese zookeepers finally know how]()
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