Rule 34 Dev - 1990s 1998 20th_century anthro anthro_on_taur anthro_penetrating anthro_penetrating_taur bovine centaur chains comic duo equine equine_taur female female_minotaur male mammal minotaur oscar_marcus penetration penile_penetration quadruped sex straight taur taur_penetrated vaginal_penetration|2610899272