Armadillidium granulatum - A fairly common mediterranean pill woodlouse of species <i><a href="//commons.wikimedia.org/wiki/Armadillidium_granulatum" title="Armadillidium granulatum">Armadillidium granulatum</a></i>.<br>Pill woodlice are small land-living crustaceans of the order <a href="//commons.wikimedia.org/w/index.php?title=Isopoda&amp;action=edit&amp;redlink=1" class="new" title="Isopoda (page does not exist)">Isopoda</a>, with seven pairs of legs, which roll-up in a almost perfect spherical shape when disturbed. The picture shows a specimen returning to its normal position after the danger has passed. © Alvesgaspar - CC BY-SA 3.0 - Wikimedia Commons