noun🔗Shareヤマアラシ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."The porcupines were startled by the loud noise and raised their sharp quills defensively. "ヤマアラシは大きな物音に驚き、防御のために鋭い針を立てました。animalnaturebiologyChat with AIVocabulary GamePractice Reading
