This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Lindworm (Germanic)
The lindworm (worm meaning snake), also spelled lindwyrm or lindwurm, is a mythical creature in Northern 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, and a bad one, a dangerous man-eater which will attack humans on sight.