FURVERT!

anal anal_penetration animal_genitalia animal_penis anthro balls canid canine canine_genitalia canine_penis duo erection fox from_behind_position genitals hi_res knot knotted_penis male male/male mammal matu_the_fox mythological_canine mythological_creature mythology nliiz penetration penis sex sheath werecanid werecanine werecreature werewolf