The protection and welfare of nonhuman animals is based on the belief that they are sentient, and that consideration should be given to their well-being and suffering, especially when they are under the care of humans. These include how animals are used in scientific research, how they are kept as companions, in zoos, farms, circuses, etc., and how human activities affect the welfare and survival of free-living species. A major concern for the welfare of animals is factory farming, in which large numbers of animals are reared in confinement at high stocking densities. These animals are crammed by the thousands into filthy, windowless sheds and stuffed into wire cages, metal crates, and other torturous devices. But simply advocating for the welfare or improvement of the conditions of these animals without abolishing their use altogether is insufficient. Focusing just on ‘animal welfare’ not only fails to challenge animal suffering, but may at times actually prolong it, by making the exercise of property rights over animals appear less unattractive. The best way to protect the well-being of animals is to abolish the root causes of their suffering, and that is by leading a vegan lifestyle and promoting animal abolition.