FENRIR or FENRIS, in Scandinavian mythology, a water demon in the shape of a huge wolf, was the offspring of Loki and the giantess Angurboda. He grew so large that the gods, in fear, had him chained up. He broke the first two chains. The third, a magic bond made of the sound of a cat's footsteps, a woman's beard, the roots of a mountain, a fish's breath and a bird's spittle, held him until Ragnarok (Judgment Day), when he escaped and swallowed Odin but was slain by Vidar, the latter's son.