In the context of animal cognitive research, “anthropomorphism” is defined as the attribution of uniquely human mental characteristics to non-human animals. Those who worry about anthropomorphism in research are confronted with the question of which properties are uniquely human. As animals, humans and non-human animals1 share a number of biological, morphological, relational, and spatial properties. In addition, it is widely accepted and humans and animals share some psychological properties such as the ability to fear or desire. These claims about the properties animals share with humans are often the products of empirical work. Prima facie one might think that in order to justify the claim that a property is uniquely human, it would be necessary to find empirical evidence supporting the claim that the property is not found in other species. After all, the goal of animal cognition is to determine what sort of cognitive abilities animals use. If scientists were to discover that a cognitive property wasn’t found in any species except human species, then the claim that some other animal had that property would be a false charge, and would be an example of anthropomorphism. However, in practice anthropomorphic worries play a pre-empirical role. Research programs are charged with being anthropomorphic because they are examining...