rule 34 anal anal sex anthro biobasher blush bodily fluids bovid bovine brown body brown fur brown hair cattle colored duo fellatio fur fur growth genitals glans growth hair hi res hooves horn human looking pleasured male malemale mammal multicolored body multicolored fur navel open mouth oral penetration penile penile penetration penis saliva sex simple background species transformation tail growth teats transformation transformation sequence transformation through sex two tone body two tone fur udder balls udders white body white fur 5945358