THE TREATMENT OF ANIMALS in ethical theories

Utilitarianism

Singer argues that we should take into account not just human happiness and suffering, but animals' too. The argument from marginal cases claims that the equality of moral interests among humans cannot be based on intelligence, for this would rule out the mentally handicapped. Moral interests are shared in sentience which we do share with animals. He also argues that to exclude animals would be akin to racism; speciesism. 

Singer is not against the eating of animals, however he is against the needless suffering of them. This would be morally wrong. He asks if someone would be willing to experiment on…