Pill bugs can use conglobation as a defensive mechanism, which means they can curl up into a ball. They usually grow about 0.5-1 inch long and are dark gray or black with seven pairs of legs.
Woodlice or sow bugs are isopod crustaceans in the order Isopoda ... They are also known as roly polies, doodlebugs, and cheese logs. Pill bugs can use conglobation as a defensive mechanism, which ...