FURVERT!

2013 4_toes amber_eyes animal_genitalia animal_penis anthro balls biped black_background black_body black_fur canid canine canine_genitalia canine_penis canis claws erection feet fur genitals green_body green_fur grey_nose knot looking_at_viewer lying male mammal markings nude on_side orange_markings orange_penis paws penis pose renki_blackwolf side_view simple_background solo spread_legs spreading theothefox toes vein veiny_knot wolf yellow_penis