|The porcupine is slow lumbering animal that likes to feed on fresh twigs and leaves. What it lacks for in speed, it makes up for with its defensive quills. Contrary to popular belief, a porcupine cannot "shoot" its quills, it must strike a predator with a body part such as its tail. The quills are covered with tiny barbs and will work their way into flesh at a rate of one-third an inch an hour. So, if you or your pet get "quilled" it is important to pull them out immediately (a painful procedure as my dog will attest).