Everyone has heard of vampires and werewolves, but how many have heard of the rokuro-kubi, the tsuchinoki or the sagari? Japan has a wealth of ghosts and monsters, collectively called yokai, which are totally unknown in the West. The bizarre and wonderful folklore of Japan includes giant corpse-eating rabbits, flaming pigs that steal human genitals, perverse water goblins, blood sucking trees, a dragon that impregnates women, cats who animate dead bodies, a zombie whale and a huge flesh eating sea cucumber that grows from a pair of discarded knickers