Second, Singer states that we should think animals are suffering the pain as human begin when we use violent behavior to treat them. “If I slap a human baby in the face with a little bit of force, and I slap a horse on its rear with the same amount of force, then I've hurt the baby more than I've hurt the horse, and so I've done something worse to the baby than I've done to the horse”. Singer uses this example to illustrate that the human and non-human have the same feeling of pain when they get same damage. It is unfair concept for the animals and human because both them suffer same violent treatment. Both them suffer “the same amount of pain”. Animal liberation theorists believe that pain is pain, whether it happens in which species
