Teo (born 16th October 2011, age 7) is a male golden-cheeked gibbon.
In 2016, Teo was moved from his parents enclosure and moved in with two other male golden-cheeked gibbons named Zak and Mikado as he had reached the age that golden-cheeked gibbons leave their families. That same year, Teo became an uncle after Tien and Kim had a son. Sadly, the infant died shortly after birth.
Following Mikado's move to Parc Animalier de Sainte Croix in France with Tia Nang, Teo and Zak continued to live together. But when they started to mature, they began to fight for dominance, resulting in the two living in separate enclosures.