How did the pillbug get its name? In order to defend itself from predators, this little critter can roll itself up into a tight ball the shape of a pill! The hard plates on its body work like armor to protect its soft underside from predators. These are just some of the fascinating facts children will discover as they explore the strange and unusual world of this creepy crawler. Vivid, eye-popping photos and clear, grade-appropriate text will engage emergent and early readers as they learn about the natural habitat, physical characteristics, diet, and behavior of this unique invertebrate.