FURVERT!

animal_genitalia animal_penis balls big_penis bladder bodily_fluids brown_body brown_fur canid canine canine_genitalia canine_penis canis causationcorrelation claws cum cum_in_uterus cum_inside domestic_dog duo equid equine erection female feral feral_on_feral fur genital_fluids genitals guts hi_res hooves horse inside_uterus internal internal_organs internal_vaginal interspecies intestines knot male male/female male_prey mammal mane organs pawpads paws penis precum quadruped smile tail unbirthing uterus vaginal vore