Porcellio laevis (commonly called the swift woodlouse, or smooth slater in Australia) is a species of woodlouse in the genus Porcellio. As the species epithet laevis as well as the vernacular name "swift woodlouse" suggests, the species is capable of quick bursts of speed when provoked.

This species of woodlouse is distinctively large, appearing up to 20 millimetres (0.79 in) long with a smooth dorsal surface. The males can be identified by their long, spear-shaped uropods. The smooth dorsal surface of Porcellio laevis separates it visually from many other species in the same genus.

It is commonly kept as a pet due to its somewhat easy care requirements and the variety of color morphs available. The species is easy to keep and can be easily established in a terrarium within a few weeks.

...