anal anthro anthro_on_feral anus barefoot bestiality black_nose blue_fur blue_hair butt canine claws cutie_mark dog ear_piercing equine feral fur gay grey_background hair hi_res hooves horse interspecies jasper lemonpuffs male mammal my_little_pony nude oral oral_sex original_character pawpads paws piercing plain_background pony rimming seth-iova sex short_hair sitting spread_legs spreading toe_claws tongue tongue_out white_fur