Porcupine Quills Can Kill, Smart News

Researchers in Italy watched porcupines corner a dog and stab it to death

10 Incredible Porcupine Facts - A-Z Animals

Lions sometimes suffer if they attack a porcupine. So why do they do it?

Porcupine Damage Control

Pa. Game Commission considers open season on porcupines

A hungry snake tried to eat a porcupine. It didn't go well, Israel photo shows

SCORES & OUTDOORS: Porcupines are plentiful and not in danger - The Town Line Newspaper

Are porcupine quills dangerous to humans? - Quora

What's it like to be a porcupine amid poaching menace, asks Maneka Gandhi-Living News , Firstpost

Family dog dies after fight with porcupine outside N.J. home