overlapping plates that make them look like little armadillos. As pill bugs grow, they molt four or five times during a lifetime. A pill bug can roll up into such a tight ball that its legs and head are no longer visible, earning it the nickname “roly-poly.” They have three body parts: head, thorax, and abdomen. The head bears compound eyes and two pairs of antennae. The thorax bears pairs of walking legs; gills are located at the top of the first five pairs. The gills must be kept slightly moist…
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