rule 34 2021 3 toes anthro to feral anus arrow disambiguation asinus backsack balls barefoot black body black border black fur border brown eyes butt transformation claws countershade torso countershading danwolf15 digitigrade dipstick tail donkey equid equine feet feral fur generation 4 pokemon genitals gloves marking leg markings looking back male mammal markings motion lines nintendo nude pawpads pink pawpads pokemon species pokeball pokemon pokemon species purple body purple fur simple background skuntank socks marking species transformation tail markings toe claws toes tongue tongue out transformation udtf video games whiskers white background white body white fur 7142132