FURVERT!

3_heads animal_genitalia animal_penis anthro big_breasts big_penis bodily_fluids breasts canid canid_demon canine canine_genitalia canine_penis canis cerberus cum demon ejaculation erica_(artist)european_mythology ftg_transformation fti_transformation gender_transformation genital_fluids genitals greek_mythology gynomorph hellhound huge_penis human_to_anthro intersex knot mammal merging mtg_transformation mti_transformation multi_head mythological_canine mythological_creature mythology nipples orgasm penis solo species_transformation story story_in_description transformation vein veiny_knot veiny_penis wolf