Travelling baboons (IMAGE) Max-Planck-Gesellschaft Caption Baboons live in stable societies of up to 150 individuals, ranging from 30 kilo adult males to infants and travel together in these mixed-age groups. New research show that all baboons compromise their preferred speed in order to keep the group together. But the smallest members are forced to adjust the most, thereby footing the greatest energy bill. Credit Carter Loftus / Max Planck Institute of Animal Behavior Usage Restrictions Use of images is limited to editorial coverage of scientific topics relating to the activities of the Max Planck Society. Any kind of commercial use (including, in particular, the exploitation of images by means of sale or incorporation in image databases or image catalogues) as well as any promotional use/use for merchandise purposes, disclosure to third parties or granting of related rights to third parties is expressly not permitted. 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.