When you think of Orwell's Animal Farm , you get stuck on the idea of some being more equal than others.  But world peace, galactic harmony, the celebration of diversity and the active practice of inclusion are all achieved in science fiction by casting minorities in the role of animals and aliens.  Star Trek comes to mind in this regard, where even hippies were disposed of, Federation style, as sensitive dissenting aliens, not forgetting Spock with his pointy ears!  And then there were Wookiees, still man's best friend. Viewing animals as humans--anthropomorphizing--or treating different races as aliens, all of this is shape shifting.  This shape is my shade, there where I used to stand--that's Steely Dan.