The gestation period for monkeys varies on the species. The rhesus monkey has a gestation period of 164 days, baboons have a gestation period of 187 days, and chimps have a gestation period of 237 day according to San Jose State University.
There are 260 species of monkey throughout the world. They are found in the jungles and forests of the Southern Hemisphere. Monkeys eat fruit, berries, nuts, foliage and insects. Large species of monkeys hunt small birds and mammals. They use noises, facial expressions and body movements to communicate. Monkeys use grooming to show affection toward each other and to make peace.