Pigtail Macaque (IMAGE) Santa Fe Institute Caption A pigtail macaque shows its 'game face.' Credit Image courtesy A.J. Haverkamp Usage Restrictions Credit to A.J. Haverkamp License Licensed content 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.