Can animals reason? If so, what would their reasoning consist in, and how, if at all, would it differ from its human counterpart? On these questions, John Locke stakes out a position that also merits consideration today. I argue that, for Locke, reasoning is a matter of the subject's construing her mental states as support for a conclusion, where that conclusion can be a self‐directed imperative. Locke does not require that the subject represent the rules governing her inferences, nor that she use language or deploy abstract ideas. I argue that Locke's particularist, imagistic account is worth taking seriously in the contemporary debates over the nature of inference and animal reasoning.