When you’re in the business of describing worms and related creatures, as we are, you grow to tolerate things that the common folk might regard as creepy and disgusting. But we are humans just the same, so when we received a picture recently from a reader of what appears to be a worm with teeth, we could react with nothing but disgust and indeed a bit of terror. We don’t mean to belabor the point, but the worm (or rather worm-like creature – we’re not sure exactly what it is) is fundamentally gross. As we said, the reader did include a picture, for good or ill, of the “worm with teeth,” and naturally he wanted to know what it is. What is the creature that struck fear into our hearts?