Rule 34 Dev - animal_genitalia animal_penis anthro anus ass backsack balls blue_eyes blue_nose blue_pawpads blue_penis canid canine canine_penis canis casparr dobermann domestic_dog erection fur hand_on_penis knot looking_at_viewer looking_back male male_only mammal nude pawpads penis pinscher presenting presenting_hindquarters raised_tail short_tail simple_background smile solo zrin|3595749856