What're you looking at? (IMAGE) Kyoto University Caption Tracking eyesight differences in chimpanzees and bonobos based on varying levels of the hormone oxytocin Credit Kyoto University/Kano Lab Usage Restrictions Credit accordingly 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.