People for the Ethical Treatment of Animals (PETA) is one of the largest animal rights organizations in the world. It promotes the belief that animals deserve moral consideration and should not have to suffer to fulfill human desires. PETA objects to all mistreatment of animals. However, the organization concentrates its efforts on ending the use of animals in research laboratories, in the fur industry, in sports and entertainment, and on factory farms. On factory farms, large numbers of food animals are usually raised indoors in pens.