FURVERT!

3:4 absurd_res anatomically_correct anatomically_correct_genitalia anatomically_correct_penis animal_genitalia animal_penis anthro balls canid canine canine_genitalia canine_penis canis close-up dogface domestic_dog erection genitals half-erect hi_res knot knot_in_sheath knotted_penis male mammal penis sheath simple_background solo urethra_tip