Most people first notice pill bugs while lifting a flowerpot or turning over a log, then watching small gray roly polies curl ...

When pill bugs roll into a tiny ball, the act looks far simpler than it actually is. Known as conglobation, a pill bugs’ “ball” involves a full-body engineering trick designed to protect them from ...

This woodlouse, also known as a pill bug or roly-poly, is demonstrating how the species can roll its armored body into a nearly impenetrable sphere when it’s threatened. This woodlouse, also known as ...