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.

plural of porcupine

plural of porcupine puffer

A pufferfish of the families Diodontidae or Tetraodontidae.

Any porcupine fish of the genus Diodon.

plural of sea porcupine

plural of Canadian porcupine

A North American porcupine (Erethizon dorsatum).

Any of several tropical fish species in the family Diodontidae that are covered with sharp spines and inflate themselves when threatened.

plural of Cape porcupine