Argument: We are at the top of the animal hierarchy and should treat other animals accordingly in order to further our own species.

We have always been superior to animals. Just as a lion can kill antelope and a frog can kill insects, so too human beings have struggled their way to the top of the food chain. Why then can we not exercise the power we have earned? Animals exercise their power and we should do the same. It is our natural obligation to do so.

The reason we have always killed animals is because we need them. We need meat to be healthy and we need to test medicines on animals to protect our own race. We use animals to further our own race. This too is surely a natural obligation.

Candidate 1: "If only rational beings should be protected by rights then we should not protect babies or profoundly retarded people; but this is absurd. Animals do make choices according to their preferences e.g. lions choose a mate and dogs choose a spot to lie in the sun One is able to have interests without language because it is easily possible to be aware of a desire and understand that desire even if one does not think of that desire in words. Furthermore, there is some evidence that animals have languages of their own e.g. dolphins, birds.The challenger can also reject either theory of rights in favour of the other."
Candidate 2: "We are morally responsible creatures and we can survive perfectly well without being cruel to animals. Animals are different because they need to hunt to survive and are not morally responsible. The interests they satisfy by being cruel to other animals (namely the need to eat) are momentous whereas the human need to wear a fur coat or have a tasty burger instead of a vegetarian pasta dish is trivial. We even use animals for entertainment, something that by definition is unnecessary."
Candidate 3: "We clearly have direct duties to animals if we condemn the clubbing of baby seals and like activities. Furthermore, it is not enough simply to state what duties we do and don't have. There needs to be a reason why we do not have direct duties to animals. What distinguishes them from human beings that might answer this question? We would argue that there is nothing. Animals unlike other 'property' can suffer and feel pain and have an interest in living."
Candidate 4: "There is a different between being morally responsible and being morally considerable. Human beings are both. Moral responsibility implies a duty and therefore a capability to act in an ethical manner. Animals can not of course be morally responsible as they do not have the intellectual capacity to ascertain what is right and wrong, only instincts as to how to survive. We cannot expect animals to be morally responsible but this does not mean that human beings do not have a duty to be morally responsible. It would be ideal for all beings to act in an ethical manner but only humans are capable of considering ethics and therefore we are the only morally responsible beings. Moral considerability refers to whether or not a being deserves to be treated in an ethical manner. There is a burden on the proposition to show why moral considerability relies on being morally responsible. Profoundly retarded human beings and babies are unable to be morally responsible and yet we consider them to be morally considerable."
Candidate 5: "There is no reason why the rights we grant animals need be the same rights that we grant human beings. There may be laws that protect animals but these will be taken more seriously as rights because of the status we give to rights. Furthermore there are several rights that do apply to animals: the right to life, freedom of movement and the right not to be subjected to torture."

We are morally responsible creatures and we can survive perfectly well without being cruel to animals. Animals are different because they need to hunt to survive and are not morally responsible. The interests they satisfy by being cruel to other animals (namely the need to eat) are momentous whereas the human need to wear a fur coat or have a tasty burger instead of a vegetarian pasta dish is trivial. We even use animals for entertainment, something that by definition is unnecessary.
