FURVERT!

1:1 abdominal_bulge anal_canal animal_genitalia animal_penis animal_vulva anus ball balls big_penis bladder bone bulldog canid canine canine_genitalia canine_penis canine_vulva canis causationcorrelation cervical_penetration claws collar dobermann domestic_dog duo erection fangs female feral feral_on_feral feral_pred feral_prey french_bulldog genitals green_eyes guts hi_res huge_penis inside_uterus internal internal_anal internal_vaginal intestines intraspecies knot larger_female leash male male/female mammal mastiff molosser nipples open_mouth open_smile organs pawpads paws pelvis penetration penis perineum pinscher quadruped raised_tail size_difference small_molosser smaller_male smile spine tail tail_anus teeth tennis_ball tongue tongue_out toy_dog translucent translucent_body unbirthing uterus vaginal vaginal_canal vaginal_penetration vein veiny_penis vore vore_tether vulva x-ray_view