The lindworm (worm meaning snake, see germanic dragon), also spelled lindwyrm or lindwurm, is a mythical creature in Northern, Western and Central European folklore that traditionally has the shape of a giant serpent monster living deep in the forest. It can be seen as a sort of dragon. According to legend, everything that lies under the lindworm will increase as the lindworm grows, giving rise to tales of dragons that brood over treasures to become richer. Legend tells of two kinds of lindworm, a good one, associated with luck, often a cursed prince who has been transformed into the beast (same trope as in the fairy tales The Frog Prince, Beauty and the Beast, etc.), and a bad one, a dangerous man-eater which will attack humans on sight. A lindworm may swallow its own tail, turning itself into a rolling wheel, as a method of pursuing fleeing humans.