anthro big_penis bodily_fluids body_size_growth cum erection expansion eyes_closed fur genital_expansion genital_fluids genitals grey_body grey_fur growth humanoid_genitalia humanoid_penis lying lying_on_ground male motion_lines muscle_growth muscular on_back open_mouth penis penis_expansion simple_background size_transformation sleeping slim small_penis solo transformation white_background wheel_of_fortune canid canine canis mammal wolf sequence