This paper explores the question: what happens to the ontology of the human individual if we take seriously the degree to which all life on this planet, including human life, is threaded through with relationships in which one creature sinks its ‘teeth’ into another and hangs on for dear life, deriving vital sustenance from that second creature, but sometimes imperiling the life of it as well? Or, to put the matter less colorfully, how ought we reconceptualize the human individual in (...) light of research into the complex relationships between humans and our resident colonies—relationships that run the gamut from mutualistic to parasitic? The relational conception of the human individual that emerges from my exploration is distinguished by two characteristics: its prioritizing of eating relationships, and its insistence on the role played by relationships that are harmful or destructive to the individual. (shrink)