FURVERT!

after_sex after_vaginal animal_genitalia animal_penis animal_vulva anus balls border_collie butt canid canine canine_genitalia canine_penis canine_vulva canis collie dobermann domestic_dog duo erection female feral feral_on_feral genitals herding_dog intraspecies knot knotted_penis male male/female mammal nauticalcanine pastoral_dog penis pinscher pull_out sheepdog sketch vulva