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Cath Palug, also "Cath Paluc", "Cath Balug", "Cath Balwg", literally "Palug's cat", was a monstrous cat in Welsh legend, given birth in Gwynedd by the pig Henwen of Cornwall; the cat was later to haunt the Isle of Anglesey, and was said to have killed 180 warriors when Sir Kay went to the island to hunt it down.