Rhesus macaque (image) Max Planck Institute for Evolutionary Anthropology Share Print E-Mail Caption An adult female rhesus macaque sitting with a relative, at the Cayo Santiago field site. Credit Klaus Leipholz / Anja Widdig Usage Restrictions The image may only be used with appropriate caption or credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.