Most millipedes are red and some are black they have a lot of legs. You can tell by the name. they have a log shell that covers its whole body sometimes millipedes curl up into a ball they can move very fast it is very similar to the centipede. But the centipede has longer legs. a millipede is a Arthropod just like crabs, lobsters, crayfish, shrimp and did you no some species of millipedes have a toxic fluid that can irritate with the skin of most people millipedes do not have a thousand legs a hatch ling only has 3 pairs of legs when they grow up to a adult they can have 200 legs as max.