title: Animal cognition: chimpanzee alarm calls depend on what others know.
abstract: After a wild chimpanzee encounters a model of a dangerous snake, whether or not he gives an alarm call depends on his perception of another individual's knowledge.
authors.affiliation: Departments of Psychology and Biology, University of Pennsylvania, Philadelphia, PA 19104, USA. Seyfarth@psych.upenn.edu
authors.forename: Robert M
authors.initials: RM
authors.lastname: Seyfarth
authors.forename: Dorothy L
authors.initials: DL
authors.lastname: Cheney
mesh_terms: D000818:Animals; D003071:Cognition; D005260:Female; D008297:Male; D002679:Pan troglodytes / Q000523:psychology*; D014828:Vocalization, Animal