Rule 34 Dev - 2018 ambiguous_form animal_genitalia animal_penis anthro balls black_and_white canid canine_penis dated erection genitals glistening glistening_genitalia glistening_penis knot male mammal monochrome peehole penis penis_focus retracted_sheath sheath signature skyelegs solo urethra urethra_tip vein veiny_penis|6583097824