FURVERT!

2015 animal_genitalia animal_penis anthro balls becoming_erect black_border bodily_fluids border canid canine canine_genitalia canine_penis canis close-up closed_sheath_slit crotch_shot erection fox fully_sheathed fur genital_fluids genital_shot genitals half-erect hi_res knot knot_in_sheath lipsticking male mammal penis penis_shot precum progression red_fox sequence sheath solo true_fox unavailable_at_source unsheathing urethra white_balls wolf xenoforge y_sheath_opening