The present text is an attempt to include the recent institutionalization of human-animal relationships in the domain of the Greek state, in the broader systems of power and the technologies of contemporary war that are restructuring the urban public space of Athens. By focusing on three social rituals of a cat community in the grove of Nea Philadelphia, I look into the ethics of affirmative collaboration that has not been taken into account by the humanist categorizations of companion animals or definitions of welfare promoted by the law 4830/2019. The focus on the heterogeneous assemblage of the carer and the cats, and the social life of cats can contribute to the understanding of relational agency, a post-humanist conceptualization of subjects and the designation of the animal public that can inform policy making and help the formation of new politics beyond binaries and the hierarchization of life forms.