10.6084/m9.figshare.5306824.v1 Marine Joly Marine Joly Jérôme Micheletta Jérôme Micheletta Arianna De Marco Arianna De Marco Jan A. Langermans Jan A. Langermans Elisabeth H. M. Sterck Elisabeth H. M. Sterck Bridget M. Waller Bridget M. Waller Video 4 from Comparing physical and social cognitive skills in macaque species with different degrees of social tolerance The Royal Society 2017 cognition evolution friendship communication monkeys great apes 2017-08-14 09:00:17 Media https://rs.figshare.com/articles/media/Video_4_from_Comparing_physical_and_social_cognitive_skills_in_macaque_species_with_different_degrees_of_social_tolerance/5306824 <b>A Barbary macaque performing in a Tool Properties (Ripped cloth condition) trial.</b> In the Tool Properties task (Ripped cloth condition) a functional and a non-functional tool were presented. A reward was placed on top of one piece of cloth (which could be pulled to reach the reward), whereas the other reward was placed directly next to the cloth piece. The subject was allowed to pull one of the two pieces.