What, exactly, makes humans human? A close look at nonhuman animal domestication practices reveals how people came to view their own uniqueness in western cultural process. The study of domestication across time shows the multiple human impulses underlying acts of animal enclosure and domestication. Animals can be beloved companions or eaten for a meal. These impulses involve contradictory moralities-a rich subject for inquiries into the dynamics of power and possession, at scales ranging from local to global.