Marmoset monkeys (IMAGE) University of Zurich Caption Marmoset monkeys are not only passive observers of third-party interactions, but that they also interpret them. Credit Judith M. Burkart, UZH Usage Restrictions With credit 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.