If we regard human rights as something possessed by all human beings, no matter how limited their intellectual or emotional capacities may be, how can we deny similar rights to great apes, who clearly surpass some human beings in their rationality, self-awareness, and emotional bonds with others? To do so would be to display a prejudice against other beings merely because they are not members of our species – a prejudice we call speciesism, to highlight its resemblance to racism.