A debut date for the baby has not been set.
Tua, the Zoo's 16-year-old Sumatran orangutan, gave birth to a baby on the morning of October 2 at approximately 8 a.m. This is the first offspring for both Tua and her mate, Sugi, 13.
The newborn is the first orangutan born in PECO Primate Reserve.
The Zoo says, like newborn humans, baby orangutans are essentially helpless, relying on their mother for care. Tua has been in constant physical contact with her baby since birth, carrying and cleaning it.
Sumatran orangutans are critically endangered in the wild due to habitat destruction.