title: Spider monkeys.
authors.affiliation: Research Centre in Evolutionary Anthropology and Palaeoecology, School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, UK. f.aureli@ljmu.ac.uk
authors.forename: Filippo
authors.initials: F
authors.lastname: Aureli
authors.forename: Colleen M
authors.initials: CM
authors.lastname: Schaffner
mesh_terms: D000818:Animals; D053819:Atelinae / Q000502:physiology / Q000523:psychology*; D005075:Biological Evolution; D056727:Endangered Species; D005260:Female; D006801:Humans; D008297:Male; D012919:Social Behavior