Rule 34 Dev - 1boy blue_seam_briefs briefs canid canine canis chalk chalkboard classroom clothed clothing colored_seam_underwear cub erection foreskin fur furry genitals grey_body grey_fur highres humanoid_genitalia humanoid_penis krimsonskaizo male mammal original partially_clothed penis retracted_foreskin school solo standing testicles text underwear underwear_down white_briefs white_clothing white_underwear wolf younger|2879910655