Rule 34 Dev - 2015 abs anal anal_sex animal_genitalia anthro balls big_dom_small_sub big_penis black_and_white braided_hair canine collar couple doberman duo equine eye_contact hair horse horsecock leash male mammal monochrome multiple_males muscles penetration penis plain_background rannik sex shinigamigirl sitting size_difference tight_fit white_background yaoi|1974332648