Apparently a woman in China discovered a snake with a single leg climbing along her wall. Like any Chinese woman would do, immediately killed the snake and fried it up with some dumplings and lettuce wraps.
Ok. She didn't eat it, but unfortunately she did kill the freak. The leg is apparently the result of a mutated gene that triggered dormant DNA that snakes still retain, but which have been buried through millennia of evolution.
You can read more about it here.