Home / Animals in Research / Primates Gallery Baby titi monkey Location: California, USA Group: Primates Species: Titi Monkey Research Areas: Behavioral research, Neurological research, Social attachment This is a baby titi monkey with her father. Titi monkeys are highly social animals and live in family groups that include mother, father and baby. Share this story: Animals in Research Understanding Endometriosis with Rhesus Macaques Humans aren't the only primates that can develop endometriosis. Rhesus macaques can naturally develop the disease, with many similarities to endometriosis in… Animals in Research Rhesus Macaques and HIV Research Rhesus macaques have played an important role in HIV/AIDS research. While HIV infects people, a related virus called simian immunodeficiency virus (SIV)… Animals in Research Beignet the Rhesus Macaque and Positive Reinforcement Positive reinforcement is used to train research animals to participate in essential studies. Here you see Beignet, a male rhesus macaque monkey,… Animals in Research Afi Closes the Door to His Chair Afi, a male rhesus macaque monkey, is being trained to voluntarily enter into a chair then close the door behind himself. The… View More Primates