The Baku [獏]

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Area(s) Reported: Asia: Japan
Date(s) Reported: Timeless

The baku of Japan are a rare sort of monster that actually benefits those humans they haunt; this is because they are believed to eat bad dreams!

According to ancient Shinto beliefs, all bad things that humans think, do, and have happen to them ― diseases, accidents, evil urges, etc. ― were caused by evil spirits; and this included nightmares. There was once a general belief in Japan that if a nightmare was not dealt with quickly, it would become the portent of something very real and very bad. Luckily, baku eat the spirits that cause nightmares to happen, which can prevent the nightmare from ever becoming anything more than a bad dream. The evil spirits that caused the nightmares could be chased away or even destroyed by calling a baku immediately upon waking: “Baku kurae! Baku kurae! Baku kurae! (pronounced “ba-ku ku-rai-eh”... “Baku, come here! Baku, come here! Baku, come here!“).

More useful still, an evil spirit that brings bad dreams might be scared away altogether before causing the nightmare by simply having a picture of a baku nearby, or writing the creature’s name on a pillow; by reminding evil spirits that a baku could be in the area, the spirits would often leave the house entirely alone!

Temple Guardian

This was considered such a powerful and useful effect that the baku’s image was carved onto the pillars and woodwork of many Shinto shrines in Japan as a guardian animal, next to other powerful guardian creatures such as tigers and Ryuu (Japanese "dragons").

While it is not exactly known when the belief in the dream-eating baku began in Japan, illustrations of the monster are known to have been in possession and use of the upper classes in the 14th and 15th centuries (1300 - 1499 CE). By the 17th century (1600 CE) the tale of the beast and its image were well-known among the entire population of the country.

The Baku’s Changing Appearance

The baku was generally conceived of as a spirit beast more than a biological animal... but this didn’t stop people from trying to describe it. The illustrations of the baku from ancient Japan are now believed to be based on a Chinese monster called the “ mo,” descriptions of which seemed to have reached Japan in the 14th century. The tales of this Chinese beast, a picture of which could ward off evil spirits, may have been combined with 7th and 8th century (600 - 799 CE) Japanese legends of a dream eating monster to create the first drawings of the baku. No one seems to know what the original Japanese dream eating monster looked like... so no one may actually know what a baku is supposed to look like!

In descriptions, baku have generally been explained in terms of known animals. For example, one description says it has “the body of a horse, the face of a lion, the trunk and tusks of an elephant, the forelock of a rhinoceros, the tail of a cow, and the feet of a tiger” (the same description states that female baku looked entirely different; but doesn’t tell us in what way). But, no matter what the description of the baku is, one detail remains the same... the baku always has a long snout, like a short elephant’s trunk. The Chinese “ mo” that current baku pictures are based on also had this snout, because the mo was likely based on an animal with this physical trait: the Malayan tapir.

Baku meets Tapir

Because of the believed connection between the baku and the mo, and the mo and the Malayan tapir, the very word “ baku” in Japanese now means “tapir” as well as being the name of the dream-eating monster... and because of this double-meaning to the word “baku,” in modern Japanese comic books it has become a customary joke to draw a tapir eating dreams like the monster baku. Now, for many people in Japan, the image of a Malayan tapir is what they think of when the baku is mentioned!

See also: Mo, Jiaotu, Nietie, & An: Metal-Eaters of China
, Ryuu
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Here's some art including this monster! Some might have been sent in by fans or might be historic images of the critters, and some could be my extra monstery doodles... just click on a thumbnail to get a better look!
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  • “Cultural note on dreaming and dream study in the future,“ by Tadao Hori, in Sleep and Biological Rhythms, 2005, vol. 3, pgs. 49-55.
  • Genso sekai no junintachi IV nihon-hen ("Truth in Fantasy" series, vol. IX), by Tada Katsumi, 1990 Shinkigen-sha. ISBN 4-915146-44-8. pg. 268-269
  • Kotto: Being Japanese Curios, with Sundry Cobwebs, by Lafcadio Hearn, 1910 (copyright 1902) The Macmillan Company, New York, New York, USA. Online: Click here!
  • Myths and Legends of Japan, by F. Hadland Davis, ca. 1910 Thomas Y. Crowell Company, New York, NY, USA. Online: Click here!
  • “Sankai Ibutsu: An Early Seventeenth-Century Japanese Illustrated Manuscript,” by Masako Nakagawa, in Sino-Japanese Studies, May 1999, Vol. 11, Issue 2, pgs. 24-38. Online: Click here!
  • Youkai Daizukan (The Large Picture Book of Japanese Monsters) [Big Koroton 12], by Satou Aribun, 1987 Shougakukan, ISBN: 4-09-259012-1. pg. 194

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