“…There is also evidence for a subsequent circle, formed by acquaintances, of about 500-600 people (7). Social networks have also been studied in a diverse array of species, including mammals, birds, fish, amphibians, reptiles and invertebrates (8)(9)(10)(11)(12)(13). In this context, the study of nonhuman primate social networks is of particular interest in light of the complexity of their societies, the variability between species, and their evolutionary proximity to us (14).…”