This is an academic article on various aspects of speciesism in pdf.
AUTHOR:Mark Bernstein
ABSTRACT:Speciesists believe that membership in a particular species is morally
relevant. Morally relevant properties entitle their possessors to have their
interests considered preferentially relative to those individuals who lack that
property. Those dispensing consideration incur obligations or, minimally,
options, to act with bias. As a matter of fact, all known speciesists are human
speciesists, not in the sense that only humans—and not tigers and cows—
believe that species is a morally relevant attribute, but in the respect that they
believe that human interests ought to be favored over the like interests of
members of other species.