rule 34 animal genitalia animal penis anthro arms tied bodily fluids bondage bound closed eyes cum cumshot disembodied hand duo ears back ejaculation equid equine equine genitalia equine penis erection genital fluids genitals hair hi res hooves shoe male male only mammal medial ring monochrome nude open mouth penis penis backwards pivoted ears restraints seraphictiger simple background solo focus spreader bar standing tail tail bondage tail tied three quarter view 9035414