rule 34 anal anal sex anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro big ears black body black fur black hair blush blush lines bodily fluids breath cloud brown body brown fur brown hair closed eyes duo facial scar from behind position fur genitals grabbing sheets hair hand on hand long tail male malemale mammal mattress mouse murid murine nude penetration penis pink nose rat rodent scar scar on muzzle sex simple background size difference smaller penetrated standing gystyle sweat taylor titmouse text 5145976