The colony of rhesus macaques at the California National Primate Research Center consists of infants to adults. Their average life span in the wild is 18 years. Monkeys live up to 38 years old at the Center due to the excellent nutrition and medical care provided. The aged rhesus colony allows researchers to understand normal aging and to develop medical treatments for age-related diseases.
Afi, a male rhesus macaque monkey, is being trained to voluntarily enter into a chair then close the door behind himself. The…
A mother and juvenielle rhesus macaque climb a branch in their outdoor enclosure. They are eating zucchini, one of many vegetables provided…
Positive reinforcement is used to train research animals to participate in essential studies. Here you see Beignet, a male rhesus macaque monkey,…
Monkeys at the Oregon National Primate Research Center are provided with many types of environmental enrichment to simulate a natural environment. In…
