 Raising large numbers of animals enables farmers to take advantage of economies of scale but also produces huge quantities of waste, greenhouse gas, and, generally, environmental degradation (FAO 2006; Hamerschlag 2011; Budolfson 2016). There is no question of whether to put so many animals on pasture—there is not enough of it. Plus, raising animals indoors, or with limited access to the outdoors, lowers costs and provides animals with protection from weather and predators. Yet when large numbers of animals live indoors, they are invariably tightly packed, and raising them close together risks the development and quick spread of disease. To deal with this risk, farmers intensively use prophylactic antibiotics. Tight-packing also restricts species-typical behaviors, such as rooting (pigs) or dust-bathing (chickens), and makes it so that animals cannot escape each other, leading to stress and to antisocial behaviors like tail-biting in pigs or pecking in chickens. To deal with these, farmers typically dock tails and trim beaks, and typically (in the U.S., at least) do so without anesthetic. Animals are bred to grow fast on a restricted amount of antibiotics, food, and hormones, and the speed of growth saves farmers money, but this breeding causes health problems of its own. Chickens, for example, have been bred in such a way that their bodies become heavier than their bones can support. As a result, they “are in chronic pain for the last 20% of their lives” (John Webster, quoted in Erlichman 1991). Animals are killed young—they taste better that way—and are killed in large-scale slaughterhouses operating at speed. Animal farms have no use for, e.g., male chicks on egg-laying farms, are killed at birth or soon  after.[2]