#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
  subtype:  Old_World_porcupine  New_World_porcupine
  part:  quill  a stiff hollow protective spine on a porcupine or hedgehog

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