Rule 34 Dev - 2014 4_toes abs anec animal_genitalia anthro balls balls_touching biceps big_penis bigger_version_at_the_source black_fur canine canine_penis claws clef clefwolf cum cum_on_penis cum_string duo erection fangs frottage fur grey_fur grin hand_on_head handjob high-angle_shot knot leaking licking male mammal markings masturbation muscular musical_instrument nipples nude orange_eyes pecs penis penis_grab piano sex sheath sitting smile tattoo teeth toe_claws toes toned tongue tongue_out wfa white_fur wolf yaoi yellow_eyes yellow_fur|2066618640