God gave man stewardship over animals, and that includes using them for just purposes. Examples of just purposes that the Catechism of the Catholic Church points out are food, clothing, medical and scientific experimentation, and the work and leisure of man (CCC 2417–8). But man must not deliberately cause animals to suffer and die needlessly, because to do so would be contrary to man’s own dignity. Animals, properly speaking, do not have "rights" because they are not human. But man does have the human responsibility to treat them with reasonable care.