Why Joseon Feared the Cat: Myogwi, Dokkaebi, and the Mythological Rivalry with the Sapsalgae — Korean Cat Folklore Fully Explained

Korean Cat Folklore | The Dual Nature of Myogwi | The Mythological Standoff Between Dog and Cat

In Seonghosasel, the encyclopedic essays of Joseon scholar Yi Ik, there is a passage that stops you cold. "The cat is said to be the tiger's maternal uncle. Its eyes shine in the night and narrow in the day, and it catches rats like a ghost. It is no ordinary beast." The tiger's uncle. A ghost-like catcher of rats. No ordinary beast. And yet this extraordinary animal was the one thing Joseon's folk belief most urgently wanted kept outside the house. In aristocratic households especially, the prohibition was firm. If a cat leaped over a corpse, the body would rise. If a cat lived in the home, spirits would follow. Pregnant women were told not even to look at one. But here is the contradiction that makes this story interesting. The same people. The same era. The same villages. And those same people painted cats on their walls to drive away rats, carried cat-hair talismans to ward off bad luck, and called on shamans who used cat bones in their rituals. Fear and dependence, running side by side. Kept at a distance and quietly relied upon. In Korean traditional culture, the cat lived precisely at the center of that contradiction — and the story of how it got there is stranger and richer than most people know.

How the Cat Became the Tiger's Uncle

Korea has a very old story about a cat and a tiger. Once, the tiger did not know how to hunt. It was powerful and fierce, but it had no technique. Starving and desperate, the tiger went to the cat and begged to become its student. The cat agreed and taught it everything: how to crouch low, how to wait without moving, how to spring. The tiger learned it all. But there was one thing the cat held back. How to climb a tree. The tiger, now fully trained and certain of its superiority, turned on its teacher. It lunged at the cat to devour it. The cat flew up into the branches. The tiger stood below, helpless. "And so the tiger regards the cat as both master and uncle." That is how the story ends. What it reveals about the cat's position in Korean mythology is consistent across hundreds of folktales. The cat is never the strongest creature in the room. But the cat is always the one who survives. Not through force but through a knowledge it refuses to give away completely — something held in reserve, something the powerful can never quite reach.

Myogwi — The Conditions Under Which a Cat Becomes a Ghost

In Korean folk belief, animals could cross into the spirit world under certain conditions. Living too long. Dying wrongly. Finding themselves in particular circumstances. The cat was a special case. Myogwi (猫鬼) — the cat ghost — was not exactly a cat that transformed, but rather a spirit connected to cats, or taking the form of one. The distinction is subtle but important. The cat was not itself supernatural. It was a creature through which the supernatural passed. The folk records of the Joseon dynasty scatter references to myogwi across regions and centuries. Three patterns recur. The first is the wronged spirit of a dead cat. If a cat was abused or killed unjustly — and particularly if it had lived with a family for years — its spirit would not leave. It would remain in the house, bringing illness and misfortune. The longer the relationship, the heavier the obligation. A cat killed carelessly after a decade of cohabitation was considered extremely dangerous. The second is the belief about cats and the newly dead. When someone died and the body lay in the home before burial, a cat crossing over the corpse was said to make it rise. This was not a metaphor. People believed it literally. The response was categorical: during any period of mourning, cats were physically removed from the room and kept away. If one appeared in a house of mourning, there was genuine panic. The interpretation that makes most sense of this is that cats were understood to sense the presence of the newly dead — their agitation and strange behavior around corpses was real and observable. But what the living interpreted as supernatural interference was almost certainly acute feline sensitivity to death's smell and stillness. The third pattern is the eyes. Eyes that shine in the dark. Pupils that narrow to slits in daylight and widen to pools at night. In a culture that believed certain living things could perceive what humans could not, this was powerful evidence. A cat staring at an empty corner was staring at something. A cat crying without cause was giving a warning. A cat suddenly bolting from a room had seen what you hadn't. This is where fear becomes dependence.

The Cat Painting That Drives Away Rats

Here is the dilemma as Joseon households actually experienced it. You cannot bring a cat inside. But you have rats. The rats are destroying your grain, your books, your stored food. Something must be done. The solution was the cat painting. A significant number of surviving Joseon minhwa — the folk paintings that decorated ordinary homes — depict cats. Among the most common is the Myocheomdo (猫蝶圖): a cat reaching for a butterfly. This was not a decorative choice made at random. In Chinese characters, the word for cat (猫, myo) sounds like the word for a person in their seventies or eighties (耄, mo). The word for butterfly (蝶, jeop) sounds like the word for a person in their eighties or nineties (耋, jil). A painting of a cat chasing a butterfly was, at one level, a wish for long life — the kind of layered visual pun that East Asian decorative culture loved. But the same painting served another purpose entirely. A cat painted on the wall would frighten rats just as a real cat would. You got the protection without the presence. The power of the animal without the danger of what it might bring with it. There was also a category of protective painting called the byeongnyeong cat image — a talismanic cat picture specifically designed to repel not just rats but malevolent spirits. The logic was almost elegant in its circularity: the cat can see spirits because it exists on the boundary between worlds. Therefore a cat's image, properly made, can also see them — and drive them away. The gaze of a creature that perceives the invisible becomes a ward against the invisible.

Dokkaebi and the Cat — Two Creatures of the Threshold

In Korean mythology, the dokkaebi is one of the most distinctive supernatural beings in the tradition. Not a demon, not a ghost, not a god. Something that exists between all of those things — emerging from abandoned objects, appearing at night, impossible to predict, capable of mischief or generosity depending on its mood and your behavior. The resemblance to the cat's position in Korean folk belief is not coincidental. Both creatures are active at night. Both inhabit the boundary between the human world and whatever lies beyond it. Both can cause harm and provide protection, sometimes within the same story. Both are associated with abandoned spaces — the old empty house where the dokkaebi dances is also where the cat wanders. In folk records from Gyeonggi and Gangwon provinces, documented by the ethnologist Son Jin-tae in the early twentieth century, cats appear explicitly as messengers or agents of the dokkaebi. If a cat inexplicably avoided a particular corner of a room, something was there. If a cat vanished without explanation, the dokkaebi had taken it. More striking is what appears in some shamanic traditions. The list of materials from which a dokkaebi could emerge — old brooms, worn sandals, discarded objects that had absorbed human attention over decades — sometimes includes the bones of a dead cat. The bones of a black cat especially were said to be usable in rituals: to summon spirits, or more commonly, to drive them away. This is the same double-edged quality that runs through all of Korean cat mythology. The thing that makes it dangerous is the same thing that makes it powerful. Because the cat touches the spirit world, a cat's remains can reach the spirit world. The threat and the remedy are the same substance.

The Sapsalgae and the Cat — Korea's Great Mythological Standoff

If the cat is the creature of the threshold, of night, of the invisible world — then Korean mythology needed a counterweight. It found one in the Sapsalgae. The Sapsalgae is a Korean dog breed of ancient lineage, with long shaggy fur that falls across its eyes like a curtain. Its name is almost a declaration: sapsal means to drive away or disperse evil spirits. This is not a dog that was given a supernatural reputation after the fact. The name came first. The animal was defined by its purpose. In folk belief, the contrast between Sapsalgae and cat was total and systematic. The Sapsalgae repelled spirits. The cat communicated with them. A house with a Sapsalgae was protected. A house with a cat was permeable. The Sapsalgae was a creature of daylight, of yang energy, of the warm and the visible. The cat was a creature of night, of yin energy, of cold and shadow and the hidden. This was not an arbitrary pairing. It mapped precisely onto the foundational cosmological framework of Korean thought: the balance and opposition of eum and yang, yin and yang. Sun and moon. Fire and water. The dog that sees off what cannot be seen, and the cat that sees what the dog cannot. The practical consequence was clear. You did not keep both in the same household. The energies would clash. The house would suffer. At the Joseon royal court, Sapsalgae were stationed at key points around the palace as spiritual sentinels, their dense fur and ancient reputation providing a layer of protection that no human guard could offer. Cats, for the same cosmological reason that made dogs essential, were not welcome. But this did not make the cat lesser. Yin is not inferior to yang. The night is not less real than the day. The cat occupied a different kind of power — the power of in-between places, the power of the edge, the power of seeing what the daylight hides. Dangerous, yes. But also, in the right circumstances, extraordinarily useful.

The Cats of the Historical Record

Beyond the mythology, actual Joseon-era cats show up in the documents of real people's lives. Jeong Yak-yong and his cat: In letters written during his years of political exile in Gangjin, the great practical philosopher Jeong Yak-yong mentions the cat he lived with. The cat caught rats that would otherwise have damaged his manuscripts and correspondence. A man of rigorous empirical thinking acknowledging, straightforwardly, that the cat was useful. The supernatural was beside the point. Kim Hong-do's cat paintings: The greatest court painter of the late Joseon period produced multiple works depicting cats with butterflies. These were not curiosities. They were made as gifts, as wishes for longevity and happiness. The fact that Korea's most celebrated visual artist repeatedly returned to the cat as a subject tells us something about how deeply the image was woven into the culture's emotional life. The Dongui Bogam: Heo Jun's seventeenth-century compendium of Korean medicine — one of the most comprehensive medical texts in East Asian history — includes the cat as a medical material. Cat fat, cat hair, cat bone: their therapeutic applications are carefully described. The cat that folk belief regarded with such ambivalence was also, in the medical tradition, a source of healing. Spiritual tool and practical remedy in the same body.

When the Prohibition Inverted

Every prohibition contains the seeds of its own exception. From Gyeongsang Province comes a story that circulated widely enough to survive in several versions. A wealthy family fell ill one by one — a succession of unexplained fevers and declining health that resisted every remedy. A shaman was brought, then a Buddhist monk. Neither could find the cause or effect a cure. Then a black cat appeared from nowhere. It moved through the house for several days with what witnesses described as obvious purpose, and then it left as unexpectedly as it had arrived. After that, the illness cleared. The spirits departed. The interpretation the story preserves is that the cat took the spirits with it when it left. From South Jeolla Province, a different version of the same logic. A household repeatedly plagued by dokkaebi disturbances — objects moved, sounds in the night, the particular atmosphere of a house that feels occupied when it shouldn't — brought a cat into the home against the usual prohibition. The disturbances stopped. Because the cat speaks the language of the dokkaebi, it can make them understand that they are not welcome. These stories don't resolve the contradiction in Korean cat belief. They embody it. The same tradition that said don't bring the cat inside also said the cat can drive out what nothing else can reach. The same creature that might disturb the dead might also protect the living. The boundary-crosser can cross in either direction.

From Prohibition to Devotion

South Korea today is a country that loves cats with a particular intensity. The catmom and catdad culture — the networks of urban residents who feed, monitor, and advocate for street cats — is one of the most organized and emotionally committed forms of animal care in the world. Cat cafes number in the hundreds. Cat content dominates social media in ways that seem to exceed even global norms for cat obsession. The animal that Joseon aristocrats kept outside the gate now sleeps on the sofa, claims the warmest spot in the bed, and is photographed approximately forty times a day. What happened to the fear? It probably didn't disappear. It changed shape. The qualities that made the cat frightening to a seventeenth-century household — its nighttime activity, its inscrutable attention, its refusal to be fully tamed, its apparent perception of things humans cannot see — are the same qualities that make it compelling now. The cat still seems to know something you don't. It still watches corners of rooms with an attention that makes you turn and look. It still exists somewhere slightly outside the fully domesticated world, touching something you can't name. The fear became fascination. The prohibition became devotion. The talismanic cat painting on the wall became the cat photo on the phone screen. The underlying impulse — reaching toward the cat for something that ordinary life can't provide — has not changed at all. Myogwi is still with us. It's just purring on someone's lap now.