Adaptive system of disgust (IMAGE) Kyoto University Caption Animals' reactions to respective excrements monitored by research team. Top left: Japanese macaques/human-like. Top right: Adélie penguin/white-splash (parasites, pathogens). Bottom left: Red-eared slider/black-pellet. Bottom right: Slow loris/macaque-like but smaller. Credit KyotoU/Jake Tobiyama Usage Restrictions none License Original 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.