Categories: long volume value,
Rodents by common name,
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Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference
A large rodent with long quills that stand straight up when it is attacked or surprised.
Any of several rodents of either of the taxonomic families Hystricidae (Old World porcupines) or Erethizontidae (New World porcupines), both from the infraorder Hystricognathi, noted for their sharp spines or quills, which are raised when the animal is attacked or surprised.