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| | World Almanac for Kids |
 | | The quills, which have needle-sharp ends containing hundreds of barbs, are only loosely attached and can be erected by the muscles of the skin. |
 | | The Hystricidae, comprising the Old World porcupines, range through the forests of southern Europe and Asia, Africa, and Indonesia. |
 | | The family is typified by the common porcupine, Hystrix cristata, which is thick-bodied, grizzled, and fl in color; it grows to a length of 60 cm (24 in), with some of its quills exceeding 30 cm (12 in) in length. |
| www.worldalmanacforkids.com /explore/animals/porcupine.html (193 words) |
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