Pill bugs can also be called “roly polies.” These creatures are actually crustaceans—not insects—and are closely related to lobsters, crabs, and shrimp. Pill bugs are the only crustaceans that have adapted to live their life on land. They’re nocturnal, and leave their burrows at dark in search of rotting animal flesh and plants.
Considered to be nuisance pests, the pill bug only bites humans or pets when directly handled. Even then, the bite isn’t dangerous.