Rule 34 Dev - animal_genitalia balls big_balls big_penis big_sheath feral fully_sheathed fur genitals hooves huge_balls huge_penis huge_sheath hyper hyper_balls hyper_genitalia hyper_sheath male outside penis photo_background sheath solo standing text doug_winger equid equine horse mammal 1998 english_text photography_(artwork)|7946486520