African porcupine quills are known to be deadly, they're barbed in such a way that each flex of muscle that they are stuck in, draws them inward. They've actually had Lions die from this (Infection from a deep wound channel).
While it may be adorable, I'd be a might bit worried.
Poor lil' thing was born to be a dog or cat and came 'round as a porcupine.
Give the little guy some inner white pine bark for me (Only thing I can think of that'd be the equivalent to a dog treat).