animal_genitalia animal_penis anthro balls big_penis bodily_fluids cum cum_on_penis duo equine_penis flared_penis genital_fluids genitals male male/male medial_ring penetration penile penile_penetration penis penis_in_penis saggy_balls shaking urethral urethral_penetration vein veiny_penis palekemono_(director) equid equine horse mammal