The contemporary human-animal relationship is highly ambivalent. It is characterized by both the exacerbating exploitative use of animals and a progressing moral concern for the life, dignity, and welfare of animals. With regard to the agricultural use of animals (which is the quantitatively most significant area of animal use and accounts for more than sixty billion land animals slaughtered globally each year), these two poles stand in particular contrast. On the one hand, agriculture has been increasingly industrialized and intensified over the course of the Twentieth Century. The modern system of industrialized animal production (or the “animal-industrial complex”) is marked by a high degree of rationalization, automatization, efficiency, mass production, and profitability, and has turned animals into mere production units—biomachines that convert feed into meat, milk, and eggs. On the other hand, the transformation of agriculture to industrialized animal production has raised grave ethical concerns, and societal discomfort at the systemic disregard for the welfare of farmed animals has grown. Most people cringe at the sight of footage showing the horrifying conditions prevailing in factory farms and slaughterhouses, and the vast majority of society subscribes to the basic moral principle that inflicting unnecessary pain and suffering on animals is wrong (a dictum also underlying the nearly universal prohibition of animal cruelty and which is so ingrained it could be considered a “rule of civilization,” as noted by the dissent in a Canadian appeal decision regarding an elephant in a city-run zoo).