FURVERT!

2:3 ambiguous_gender animal_genitalia animal_vulva anthro anthro_on_feral anus bdsm bestiality blush bondage bound breath broken_horn candle_light_the_witch catheter duo encasement english_text equid equine equine_genitalia equine_vulva fan_character female feral fingering forced gaping_mouth genitals hi_res horn horse latex magic magic_circle male male/female mammal medical_instrument mythological_creature mythological_equine mythology open_mouth pony puffy_anus rape restrained scientific_instrument sex shakes_heartwood size_difference stoopedhooy stump_horn text tongue tongue_out tracheal_tube unicorn vulva