A professor in the philosophy department at Princeton University, coined the term "speciesism" which is analogous to racism and sexism.Professor Peter Singer says animals have traits which make them different from humans, inherited from genes and DNA, and yet are viewed as inferior.
Being more intelligent does not make one superior.
As Jeremy Bentham, an 18th century reformer wrote about animals, "The question is not, can they reason? Nor, can they talk? But, can they suffer?"