Urbanization and development of green spaces is continuing worldwide. Such development frequently engulfs the habitats of native animals, with a variety of effects on their existence, location and ways of living. This paper attempts to theorize about some of these effects, drawing on aspects of Foucault's discussions of power and using a metaphor of human colonization, where colonization is understood as an "ongoing process of dispossession, negotiation, transformation, and resistance." It argues that a variety of different kinds of human/animal power relations can exist in urban areas, not all of which are examples of human domination. The paper concludes by raising a number of questions about the implications of these human/animal relations.