animal_genitaliaanimal_penisanthroballscanidcaninecanine_genitaliacanine_penisfurfurnituregenitalsgraphite_(artwork)hairhalf-erectknotmalemammalmarudimonochromemuscularmuscular_anthromuscular_malenudepenispresentingpresenting_penissimple_backgroundsittingsolostooltraditional_media_(artwork)white_background