This paper wants to answer the following questions: 1) Is there a criterion that allows us to objectively
establish the superiority of a human being over an animal of another species?; 2) assuming
that this criterion exist, is its general application valid, that is to the Human being per se over
Animal per se? Or do we have to take the individuals and the contexts in which they are into
account?; 3) assuming that there is an objective and general criterion able of defining us as superior,
do we have the right to dominate over other animals as a consequence?
