Bearded Capuchin Monkeys (1 of 2) (IMAGE) PLOS Caption Bearded capuchin monkeys deliberately place palm nuts in a stable position on a surface before trying to crack them open, revealing their capacity to use tactile information to improve tool use. Credit Barth Wright Usage Restrictions With credit to source 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.