Abstract

There is a growing consensus that factory farming of animals — also known as CAFOs, or concentrated animal feeding operations — is morally wrong. The American animal rights movement, which in its early years focused largely on the use of animals in research, now has come to see that factory farming represents by far the greater abuse of animals. The numbers speak for themselves. In the United States somewhere between 20 million and 40 million birds and mammals are killed for research every year. That might seem like a lot — and it far exceeds the number of animals killed for their fur, let alone the relatively tiny number used in circuses — but 40 million represents less than two days’ toll in America’s slaughterhouses, which kill about 10 billion animals each year.