Cockroaches are an ancient group of insects, most closely related to termites and somewhat more distantly related to mantises. Together they are part of a larger group that also includes grasshoppers and crickets, stick insects, earwigs, and stoneflies. Cockroaches are generalists that can live in a wide range of habitats (though rarely in cold regions) and eat opportunistically. Some species, like the German Cockroach, are social insects that live in colonies.
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