Bonobo grooming (IMAGE) Harvard University Caption Bonobos interacting in tolerant intergroup encounters in Kokolopori bonobos. Credit the Kokolopori Bonobo Research Project/Liran Samuni Usage Restrictions CC-by 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.