The other animals humans eat, use in science, hunt, trap, and exploit in a variety of ways, have a life of their own that is of importance to them apart from their utility to us. They are not only in the world, they are aware of it. What happens to them matters to them. Each has a life that fares better or worse for the one whose life it is.
That life includes a variety of biological, individual, and social needs. The satisfaction of these needs is a source of pleasure, their frustration or abuse, a source of pain. In these fundamental ways, the nonhuman animals in labs and on farms, for example, are the same as human beings. And so it is that the ethics of our dealings with them, and with one another, must acknowledge the same fundamental moral principles.
[Original speech written and performed by Dr. Tom Regan]
They live, they die, for your pleasure
They live, they die, for your pleasure