Pillbug

Armadillidium vulgare

Habitat: Gardens, mountains, and deserts

Some species of pillbugs curl up into a tight ball when disturbed — a defense mechanism against predators. They chew up dead leaves and food scraps, and tiny microbes get to work on the shreds that fall out of their mouths. The result is healthy soil. A lesser-known pillbug fact: They aren’t actually “bugs,” and have more in common with crabs and shrimps than insects.