I classify it in the "Eww, wtf, no, lol" bracket. Just when you think you've seen everything...
Beastiality, hell, even interspecies preggo sex beastiality, is pretty tame material as far as fetish art is concerned. You really haven't seen anything until you have seen stuff like ero-guro cannibalism, Sonic urinal fetish stuff, shitting dick nipples, people turning into diapers, dicknecks, etc.