Common Pill Woodlouse

Armadillidium vulgare, the common pill-bug, common pill woodlouse, roly-poly, potato bug, slater, doodle bug, or carpenter is a widespread European species of woodlouse and the most extensively investigated terrestrial isopod species. It is native to Mediterranean Europe, but has been an introduced species and naturalized in almost all suitable ecosystems. Many of their behaviors are driven by the prevention of desiccation, or drying out, which is why they are commonly found in high humidity, moderate temperature areas. Within ecosystems, they feed primarily on plant litter, which is essential for nitrogen cycling, and serve as prey for spiders, centipedes, and other small organisms.

They are kept as pets by hobbyists for their wide range of possible color variations.