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Why don't spiders get caught in their own webs?
 “Spiders are amazing silk engineers. They make many different kinds of silk for different purposes. They use a strong, non-sticky silk for the main components of their webs and another kind of silk for capturing their prey. They don’t get caught in their webs because they walk on the non-sticky silk or lower themselves on a separate silk line, carefully avoiding the sticky.”
-from Susan J. Weller, Associate professor, Department of Entomology, Curator of Lepidoptera, Bell Museum of Natural History, University of MN.
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