The reach of All About Worms is international – just ask our reader from Saudi Arabia, who recently wrote in with an extraordinary tale of worms (or possibly – nay, probably – caterpillars) that he found about 120 kilometers (75 miles) west of Riyadh, the capital of and largest city in Saudi Arabia. The (likely) caterpillars he found were primarily green (multiple shades of green, in fact), but they were also black with a brown (and somewhat red) stripe that runs down the length of their bodies. The reader also reports that the “worms” have some type of horn on their body, although it is somewhat hard to see in the picture he sent (see below). He was wondering what he had found, and if they are poisonous.