Rule 34 Dev - 2014 abs animal_genitalia anthro biceps big_penis black_fur brown_hair canine canine_penis chest_tuft cirrus collaboration erection frottage fur furry furry_only gay green_eyes grin hair hybrid knot long_hair lying male mammal muscles nipples nude on_back open_mouth pecs penis precum rough_collie ryusei_iouko sheath teeth tongue tuft wolf yamato_iouko yamatoiouko young|1731444048