Yeti (also known as Bigfoot, the Abominable Snowman).
A native of Tibet, the yeti is believed to be related to the troll, though no one has yet got close enough to conduct the neccessary tests. Up to fifteen feet in height, it is covered head to foot in purest white hair. The yeti devours anything that strays into its path, though it fears fire and may be repulsed by skilled wizards.
Scamander, N.: Fantastic Beasts and Where to Find Them. Comic Relief and Bloomsbury in association with Obscurus Books, 18a Diagon Alley, London. 2001.