In the video, several monkeys are perched on a branch of a tall tree. Moments later, the first monkey skillfully jumps to the smaller tree, safely landing on one of its branches as it bounces.

Koko the chimpanzee was a happy-go-lucky fellow, but he couldn't shake one nagging thought: his lack of a tail.

This makes tree life a good fit ... They are very agile and can hop from branch to branch with ease. This kind of monkey is a popular monkey in zoos and has been found to fair quite well in ...