What Is the Baku? Tracing the Dream-Eater from Chinese Screens to Pillows

Someone wakes in the small hours from a bad dream and knows what to say. The words are old: a call to a creature with an elephant's trunk and a tiger's feet, asking it to swallow the dream before the dream can do harm. The creature is easy to meet in museums, on carved toggles and lacquered pillows. The beginning of the idea is harder to find. The baku came from China as a bedside guardian against sickness and evil. When it became a dream-eater is not settled, and the sources read for this scroll do not agree on a date. What follows is the trail, object by object, and the places where it goes cold.

A beast built from other animals

The oldest text we could open is Chinese. In the ninth century the poet Bai Juyi wrote a short preface and a verse for a small screen painted with the creature the Chinese called mo. He gives it the nose of an elephant, the eyes of a rhinoceros, the tail of an ox and the feet of a tiger, and he places it in the mountain valleys of the south. Sleeping on its hide, he says, keeps plague away, and a picture of it keeps evil away. He owned the screen because he suffered from headaches, and he set it at the head of his bed. He also cites the Shan Hai Jing, an old Chinese book of strange creatures, for a diet of iron and copper and nothing else.

The verse that follows has nothing to do with dreams. It laments an age that melts iron into weapons and casts copper into Buddha images, until a beast that eats only metal would go hungry.

Japanese sources do not give one fixed look. Lafcadio Hearn, writing in the early 1900s, quotes "an ancient book in my possession" for a male baku with a horse's body, a lion's face, an elephant's trunk and tusks, a rhinoceros's forelock, a cow's tail and a tiger's feet. Only the habit of joining animals stays constant, as it does with the guardian lion-dogs called Komainu, another creature of continental ancestry.

How a bedside guardian became a dream-eater

Bai Juyi's creature guards a sleeper's head against illness. The Japanese dream-eater is a later turn in the story.

One reference article describes an early seventeenth-century Japanese manuscript, the Sankai Ibutsu, in which the creature is shy and protects against plague and evil, and eating nightmares is not among its powers. The same article says the beast was familiar in Japan by the Muromachi period (fourteenth to fifteenth century), citing the scholar Hori Tadao. It also cites a 1791 woodblock illustration, discussed in a 2007 study by Adam Kern, that shows a baku explicitly destroying dreams. We did not see that print, so treat the date as second-hand.

The objects fill part of the gap. The Metropolitan Museum of Art holds two Edo-period netsuke of the creature, both dated to the eighteenth century: a seated one in ivory, and a crouching one in wood signed Sadatake. The Los Angeles County Museum of Art holds a pair of lacquered wood-and-bamboo pillows, made around 1800, which it titles "Nightmare Eating Baku Design." Read such titles with care. They are catalog titles written by modern museums, not labels left by the makers.

What the objects do show is that by about 1800 the creature's image sat on a sleeper's pillow. The step before that is missing from everything we read.

Records from earliest to latest

Who made each record matters as much as its date. A poet, a museum cataloger and a foreign essayist are different kinds of witness.

The call, as Hearn heard it

Hearn is the one source here that lets us hear a practice. He says the Chinese character for the creature's name was once set in gold on the lacquered wooden pillows of lords and princes, so that the sleeper would be spared evil dreams. Pictures of the creature had already become rare in his day, he writes, but the old call lived on in ordinary speech.

"Devour, O Baku! devour my evil dream!" Lafcadio Hearn, "The Eater of Dreams," in Kotto: Being Japanese Curios, with Sundry Cobwebs (Macmillan; Project Gutenberg ebook 55473).

On waking from a nightmare, Hearn says, one should repeat the call three times. The creature then eats the dream and turns the fear into good fortune and gladness.

Two cautions apply. Hearn was a foreign lecturer in Tokyo writing for readers abroad, and he does not say where he heard the call. And his last pages are a first-person dream sketch of his own, in which the baku declines a dream it judges lucky. That is literature, not recorded folklore.

What to look for on a baku object

A short field guide for a museum case or catalog page:

• Look at the head. A trunk and tusks mark the usual Japanese image in pre-Meiji prints and carvings.
• Look at the feet. Tiger paws appear in Bai Juyi's list and again in Hearn's.
• Note where the object was meant to sit. A pillow points to sleep.
• Read the date and the title separately. The title is the museum's wording.
• Do not expect one standard design. Bai Juyi's list and Hearn's list differ, and a horse's body and a lion's face appear only in Hearn's.

Common mistakes and mix-ups

"The baku is the tapir." In modern Japanese the word names two things: the traditional creature and the Malayan tapir. A reference article on the Chinese mo says a French sinologist matched the Chinese word to the tapir in 1824, and that an 1885 Japanese zoology text gave the word as the tapir's name. The creature in Bai Juyi's preface is a joining of four animals' parts, not a portrait of one. The same article says the older Chinese word named the giant panda. Sources differ on that point, and we did not check it against the Chinese texts.

"Baku and Hakutaku are one creature." Hearn mentions Hakutaku as a second name. A reference article treats Hakutaku, from the Chinese Bai Ze, as a separate beast that reached Japan in the Tang period and was tied to knowledge of ghosts and spirits. The same article says an image of Hakutaku was placed on pillows during the 1858 cholera outbreak in Edo, and that the scholar D. T. Suzuki described it as eating bad dreams. Both claims are second-hand here. They show why the two records overlap and why writers swap the names. Treat them as two creatures with two records.

"It swallows every dream." In Hearn's folk account it turns misfortune into good fortune. In his own sketch it refuses a lucky dream. A warning that a hungry baku may swallow a dreamer's hopes as well appears in one reference article, but we found no early source for it, and it is not in Hearn. Treat it as a modern addition.

"It is a deity." The sources we read describe a protective image and a spoken call. They do not describe a god with worship of its own.

Where it stands now

The baku belongs to folk belief and to the craft of charms, not to a living cult with priests and festivals. Hearn said in the early 1900s that the call after a nightmare was still common speech. We found no survey that says how far it survives today, so present-day use is unverified. What is certain is the record: a Chinese preface about a headache, a few carved and lacquered objects, and one writer who listened. Modern media have given the creature other uses; this scroll stays with what can be read, handled and dated.