FURVERT!

1:1 ambiguous_species animal_genitalia animal_penis anthro azzai balls becoming_erect canine_genitalia canine_penis close-up colored digital_drawing_(artwork)digital_media_(artwork)erection front_view fur genitals knot knotted_penis male navel nude penis penis_tip red_knot red_penis shaded sheath simple_background solo unsheathing white_body white_fur