Few household encounters trigger as much instinctive alarm as spotting a house centipede darting across the floor. Yet despite their unsettling appearance and startling speed, these creatures pose virtually no danger to humans. Understanding what they actually are — and what they do — may change how you react the next time one appears.

The moment a house centipede streaks across a floor, instinct kicks in before rational thought. Its speed, unusual shape, and abundance of legs create an immediate sense of threat — a reaction that is…


