Most monkeys only have one baby at a time. On occasion, monkeys do have twins, but this is more rare.
Monkeys normally give birth only once every 2 to 3 years. Similar to humans, monkeys immediately bond with their offspring and devote a lot of time to mothering the baby. The mothers also socialize their young and will die protecting them from predators. The father plays a role in raising the baby and will often be observed interacting and playing with it. On average, a monkey will mature between the ages of 4 and 8 when they will then begin searching for a suitable mate. The females typically seek out the strongest and most dominant males in a group to mate with.