An analysis of alienated animal labour has much to contribute to our understanding of the systems of animal oppression under capitalism. However, the humanist model of alienated labour which dominates the current literature, drawn from Marx’s early works, is predicated on a concept of ‘species-being’ that presupposes an untenable dichotomy between humans and animals, leaving no room for animal agency or flourishing, and severely limiting the application, scope, and emancipatory potential of the alienation critique. This chapter attempts to chart a way out of this dilemma by putting forward an ‘appropriative’ rather than ‘humanist’ model of alienated animal labour that allows us to avail ourselves of the rich social and political dimensions of the alienation critique while avoiding the difficulties that attend it. The chapter begins with a general definition of alienation before surveying Marx’s account of alienated labour as well as various attempts to apply his account to animals. It then focuses in particular on the notion of species-being, which underpins Marx’s theory of alienated labour, and argues that its humanist presuppositions preclude any coherent application to animals. The chapter then puts forward an alternative appropriative model of alienated animal labour, and makes the case that this account overcomes the difficulties plaguing the humanist model, giving way to an emancipatory conception of unalienated animal labour.