Millipede

Millipedes look like insects or worms, but they're more closely related to crayfish, lobsters and shrimps. Most millipedes have round, segmented bodies, and nearly all the segments have two legs. The segments at the front and rear of their bodies have no legs, and the first three segments have one pair of legs. The known greatest number of legs on a millipede is 750, while the lowest known number is 22. A hard shell called an exoskeleton covers most millipedes, and brown or black are common millipede colors. A brightly colored millipede is a sign to predators that it gives off bad smells or toxic chemicals. The smallest millipedes are 3 mm (0.1 inches) and the largest are 305 mm (12 inches). At the bases of millipede antennae are structures called Tömösváry organs, which help them sense what's happening around them. Most millipedes also have eyes on the sides of the head.