rule 34 animal genitalia anus artist name balls blue balls blue body blue fur blue sheath blue tail blue wings closed smile dragon erection feral front view fur furred dragon genitals hi res himeragoldtail knot male membrane anatomy membranous wings mouth closed multicolored body multicolored fur pawpads penis pink pawpads pink penis presenting retracted sheath ridged penis sheath simple background solo spread legs spreading two tone body two tone fur white body white fur wings 7013044