Rule 34 Dev - anal anal_fingering anal_masturbation anthro balls biceps big_muscles black_body black_fur black_nose clothing erection fingering fingering_self fur genitals green_eyes headgear headkerchief headwear kerchief male masturbation muscular muscular_anthro muscular_male nipples pecs penile penile_masturbation penis red_kerchief solo spread_legs spreading tail tongue rthur lupine_assassin canid canine canis mammal wolf 2008|315217175