Rule 34 Dev - 2022 animal_genitalia asinus balls blue_eyes calima dappled_fur digital_media_(artwork) donkey draft_mule equid equine feathering feral fully_sheathed fur genitals hair hooves horse hybrid long_ears male mammal mane mule on_hind_legs sheath simple_background skugga_(skuggamul) solo white_hair white_mane white_tail|7753704672