Rule 34 Dev - 2014 abs animal_genitalia anthro artificial_vagina ass balls biceps big_penis black_fur brown_hair canine canine_penis collaboration duo erection fleshlight frottage fur furry green_eyes hair ishiga knot male mammal masturbation muscles nipples nude onahole open_mouth pecs penetration penis plain_background sex sex_toy sheath smile standing teeth tongue tongue_out wolf wolfblade yamato_iouko yamatoiouko yaoi zaos_(artist)|1788737624