This unusual news report about a domesticated gibbon (monkey) comes from a Zoo in Nagasaki, Japan.
Momo the gibbon, who lives at the Kujukushima Zoo and Botanical Garden Mori Kiara in Nagasaki Prefecture, Japan, delivered a baby which surprised zookeepers, since Momo lived in her own enclosure with No males around. She was very protective of the baby, United Press International reported, so it wasn't until 2 years later that handlers were able to collect DNA from the youngster to determine who the father was.
As it turns out, a 34-year-old agile gibbon, Itou, was the baby's daddy. Zookeepers found that a partition between Momo's exhibit and Itou's off-display area had a perforated board with holes a few millimeters in diameter, and they believe the two were able to mate through one of those holes. The perforated board was replaced with a steel plate but Momo and Itou will be introduced properly to each other so that they may live as a family.