Cyrtophora citricola, a type of orb-weaving spider, live in big colonies. So males potentially have a large pool of females from which to choose a mate. Buschwerk/Flickr hide caption

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She's A Man-Eater, And That's OK With Male Orb-Weaving Spiders

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Reconstruction of the giant filter feeder, scooping up a plankton cloud. Aegirocassis benmoulae was one of the biggest arthropods that ever lived. Family members include today's insects, spiders and lobsters. Marianne Collins/ArtofFact hide caption

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Think Man-Sized Swimming Centipede — And Be Glad It's A Fossil

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