Rule 34 Dev - anthro biceps big_butt black_body black_fur brown_hair butt duo fur hair male male/male muscular muscular_male nude open_mouth shower thick_thighs ishiga-san yamatoiouko shadow_kiana yamato_iouko canid canine canis collie domestic_dog herding_dog mammal pastoral_dog rough_collie sheepdog wolf 2018 digital_media_(artwork) hi_res|6555032610