Chimpanzee (IMAGE) University of Zurich Caption Chimpanzees are capable of actively changing and socially learning the structure of meaningful, object-specific calls. Credit Florian Möllers / Katie Slocombe Usage Restrictions None 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.