#porcupine__hedgehog  relatively large rodents with sharp erectile bristles mingled with the fur
  supertype:  rodent__gnawer__gnawing_animal__gnawinganimal  relatively small gnawing animals having a single pair of constantly growing incisor teeth specialized for gnawing
  part:  quill
  subtype:  Old_World_porcupine  terrestrial porcupine
     subtype:  brush-tailed_porcupine__brush-tail_porcupine  porcupine with a tuft of large beaded bristles on the tail
     subtype:  long-tailed_porcupine__Trichys_lipura  porcupine of Borneo and Sumatra having short spines and a long tail
  subtype:  New_World_porcupine  arboreal porcupine
     subtype:  Canada_porcupine__Erethizon_dorsatum  porcupine of northeastern North America with barbed spines concealed in the coarse fur; often gnaws buildings for salt and grease

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