“A porcupine road kill between Yellowknife and Hay River provided a good quantity of quills to start off with.”

“The porcupine fish uses a nightmarish disguise and swells with water, which frightens enemies as large as tiger sharks.”

“For example, the porcupine is defenseless except for its quills, the deer vulnerable except for its speed.”

“Hedgehogs, porcupines, and some Old World salamanders sport protective spines.”

“The Erethizontidae is a family of rodents commonly known as the New World porcupines.”

“As is the case with North American porcupines, the quills are loosely attached but can't be thrown or otherwise projected.”