Ugjuknarpak is a predatory rodent from Inuit myth.
This creature is similar in appearance to a large, human-sized mouse. It has a prehensile tail. It is quick, has excellent hearing, and its hide is impenetrable to all but magical weapons.
The ugjuknarpak hides under overturned canoes. From this position, it snatches human prey that wander too close with its long tail. No one dares approach its lair.