In Baboon Metaphysics, Dorothy Cheney and Robert Seyfarth offer an analysis of baboon cognition that promises to exemplify the very best interaction of philosophical theory and empirical research. They argue that baboons have a language of thought: a language-like representational medium, which supports the sophisticated cognitive abilities required to negotiate their complex social environment. The author condenses six syntactic properties that Cheney and Seyfarth identify three broad categories: Representational/propositional/independent of sensory modality; Discrete-valued/rule-governed/open-ended; and Hierarchically structured. Beyond baboon cognition and the origins of language to draw two purely methodological morals. The first is that speculating about the form of thought is a dangerous business. It can seem almost irresistible to assume that thought has a form. Second theorists have neglected alternative representational possibilities because they have too unreflectively subscribed to a dichotomy between imagistic and linguistic formats.