FURVERT!

animal_genitalia animal_penis animated animated_gif ball_growth balls becoming_erect canine_genitalia canine_penis clitoris close-up expansion female ftm_transformation gender_transformation genital_close-up genital_expansion genital_growth genital_transformation genitals growth human low_res lustylupine male mammal monochrome penis penis_expansion penis_growth roan_(lustylupine)sheath short_playtime solo transformation unsheathing vulva