In 2020, a female white-cheeked gibbon named Leilani at the Tama Zoological Park in Tokyo, Japan, gave birth to a healthy baby, despite living alone in her enclosure for the previous seven years. Since there was no male gibbon in her enclosure during that time, the zookeepers were initially baffled about how she could have become pregnant. However, after conducting genetic … [Read more...] about A gibbon who lived alone in her cage had a baby. Japanese zookeepers finally know how