Rule 34 Dev - anal anal_sex anthro ass blush bodily_fluids canid canine canis domestic_dog duo fangs fur grey_body grey_fur hi_res humor kuro_(nomifuki) male male/male male_only male_penetrated male_penetrating male_penetrating_male mammal muscular nomifuki penetration sex shiro_(nomifuki) size_difference sweat tailwag white_body white_fur|5030582360