In this paper I introduce the ‘changing the subject’ problem. When proponents of animal protection use terms such as dignity and respect they can be fairly accused of shifting debate from welfare to rights because the terms purportedly refer to properties and values that are logically distinct from the capacity to suffer and the moral significance of causing animals pain. To avoid this problem and ensure that debate proceeds in the familiar terms of the established welfare paradigm, I present an expressivist analysis of animal rights vocabulary. When terms such as dignity and respect are understood in line with the theory of moral language use known as expressivism, proponents of animal protection that use these terms can escape the charge ...