The Quillaupus is native to New England, where it is usually found amongst woods of birch trees. It is furry, with blue and purple stripes. This makes for terrible camouflage -- which is presumably why it evolved to arboreal existence.
The animal has many sharp quills -- and many sharp eyes for sighting its prey. Its method of attack: the prehensile tail loosens its grip on the tree branch where the creature hangs, and the Quillaupus simply drops down upon its victim from above.
The typical Quillaupus is approximately the size of a raccoon; it preys primarily upon squirrels and birds. However, there is record of one Quillaupus that grew large enough to swallow a grown man in one fell swoop. Luckily for this man, the beast's teeth became lodged in the soil, and he was able to dig his way out to safety.