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| | Porcupine,Mammals,Porcupine Picture,Mammal Pictures,Catalog,Encyclopedia (Site not responding. Last check: 2007-10-15) |
 | | Porcupines are large, spine- or quill-bearing rodents in the families Hystricidae (Old World) and Erethizontidae (New World) of the mammalian order Rodentia. |
 | | The Old World porcupines include the common or crested porcupine, Hystrix cristata, found in southern Europe and Africa. |
 | | A large rodent, about 61 cm (2 ft) long, it is characterized by a crest of white-tipped quills that easily become detached. |
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