title: Animal cognition. 'Killjoys' challenge claims of clever animals.
authors.forename: Michael
authors.initials: M
authors.lastname: Balter
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D001717:Birds; D003071:Cognition; D004645:Empathy; D006801:Humans; D007858:Learning; D002679:Pan troglodytes; D051381:Rats; D056345:Theory of Mind