A gibbon who lived alone in her cage had a baby. Japanese zookeepers finally know how
https://edition.cnn.com/2023/02/09/asia/japan-zoo-gibbon-pregnancy-mystery-intl-hnk/index.html
I wonder why animals can be easily in good relationship with other animals living close to them. It's often the case with female animal living with male animal in the same cage to bear a child.
When it comes to human beings, it's not easy to confine a man and a woman into the same cage. So, it's difficult to compare the possibility. But, I guess human beings are less likely to bear a child.
