Scientists claim this ugly bugger could hold the key that'll one day enable us amputees to regrow our missing limbs.

The planarian worm can regrow its entire body.

In a new study, scientists say they've identified the genes that allow the worm to regenerate -- raising the prospect that the process be replicated in humans in the distant future.

It's an enticing idea, but if I woke up one morning to find a flatworm growing from the end of my stump I'd be rather alarmed.