Rule 34 Dev - anus balls black_anus black_balls black_mane black_penis black_tail equid equine equine_anus feral genitals grey_body hi_res horse huskii-s male mammal mane markings medial_ring narrowed_eyes neck_scar penis side_view simple_background solo tail vein veiny_penis white_mane white_markings|11797261376