[Dr. Bogus Pachysandra]

The porcupine must be completely nekkid now!
But it also shows you some of the nature of the breed. Won't stop even when in great pain.

[TheBattman]

Thus one of the things that makes this and a handful of other breeds inherently more dangerous - They attack someone or something they are not suppose to - they are not easily dissuaded from the attack - and often don't stop until death.