Just because porcupines sound pretty cute, doesn’t mean they don’t pack a punch! A North American porcupine can have up to 30,000 quills and these spiky things will get stuck in your skin because they detach easily from the porcupine. Added to that, they have overlapping scales or barbs at the tip so they are extra tricky to remove. Ouch.
On the upside for the porcupine, they can never be naked because new quills grow to replace the old ones. But it is still not a good idea to let your dog try and bite one!