But most African monkeys spend a reasonable amount of time on the ground and it's for this reason that their tails are not as prehensile as their cousins in other parts of the world. They use it primarily for balance and not as a fifth hand like New world monkeys.
The fact that they have tails is the distinguishing characteristic between them and the apes (gorilla and chimpanzee).
Monkeys breed at any time during the year and they normally give birth to one or two young after a gestation period of between four to eight months.
Daughters normally remain with the family group for live while the males leave during adolescence to form their own groups or live bachelor lives.