rule 34 23 ambiguous gender ambiguous pred anal anal sex anal vore anthro ass belly big belly blue body blue fur bodily fluids bugg artist catnip bugg clenched teeth comic digestion duo feral fur hi res internal machine male maleambiguous mammal matsu takiama micro mouse murid murine nude open mouth partially inside penetration regurgitation robot rodent simple background size difference smaller pred smile soft vore stomach bulge tail teeth teeth showing tongue transformation unknown species vore white body white fur 8177361