llamhigyn y dwr

The Welsh name for the water-leaper, a giant toad-like creature with a serpent's tail and bat's wings and two needle-sharp fang. It preys upon both humans and animals, dragging them to their deaths if they venture too close to the water. If it catches a sheep, the only part left untouched would be the fleece, found downstream several days later. Should the water-leaper encounter a lone fisherman on a deserted lake, he was likely to suffer the same fate, with only his indigestible hat and boots reappearing the next day.