Tarzan III: A New Beginning
Jack first appears as a toddler at the beginning of the film. Where his father Tarzan was showing him around the the jungle so that when the day comes he would be ready to lead the gorilla tribe.
During his entire teenage years, he grew up with continuous struggles to fit in with the gorillas; performing various monkey-like action and other animal actions such as picking fruit, learning other animal languages, fighting a snake, eating termites, etc. Just like his father before him. On his 18th birthday,