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| American porcupine (Erethizon); Canadian porcupine (Erethizon); New World porcupine (Erethizon); North American porcupine (Erethizon) | |||
| Canadian porcupine (Erethizon dorsatum); American porcupine (Erethizon dorsatum); North American porcupine (Erethizon dorsatum) | |||