The aswang is the most famous monster in the Philippines, and it is not one creature but a family of them. It is a ghoul, a vampire, a viscera sucker, a weredog and a witch, and it has been reported, believed, feared and investigated for more than four centuries. It lives in the provinces, in the small towns and the barrios, in the places where the streetlights end and the dark begins. It is said to fly at night, to feed on the living, and to look, by day, like an ordinary person — a neighbour, a relative, a woman at the market. The aswang is the monster that lives next door, and that is what makes it frightening.
The word “aswang” is a catch-all term, a Tagalog umbrella word for a large family of evil spirit-like creatures. The folklorist Maximo D. Ramos, who spent his life studying the aswang, divided it into five categories: the ghoul, the vampire, the viscera sucker, the weredog and the witch. Each one is different, and each one has its own habits, its own shape, and its own way of killing. Together they form the most complex monster tradition in South-East Asia, and one of the most enduring in the world.
The manananggal
The most famous of the aswang is the manananggal, the viscera sucker, and it is the creature most people mean when they say “aswang”. By day, the manananggal is an ordinary woman, living an ordinary life in an ordinary village. At night, she splits her body in half at the waist, leaving her lower half standing in the house, and grows bat-like wings from her upper body, which flies off into the dark. She has a long, thread-thin proboscis tongue, which she uses to feed, and she is said to seek out pregnant women, and to feed on the unborn child within. The name comes from the Tagalog word tanggal, meaning to detach or to remove, and it describes exactly what the creature does: it detaches itself, and it flies away.
The manananggal is known by different names in different parts of the Philippines. In the Visayas, it is called the abat, or the boroka, or the mangalok. In the Ilocos region, it is the balbalan. In some places, it is the magtatanggal. The creature is concentrated in the western Visayas, and Capiz province, on the island of Panay, is named most often as its home. Capiz is still called, by Filipinos and by tourists alike, the home of the aswang, and the province has, at times, embraced the reputation, and at times tried to live it down.
There are other forms. The tik-tik, or wak-wak, is a bird-like creature, named for the sound it makes as it flies — a rhythmic tik-tik-tik, or a wak-wak-wak, that grows fainter as the creature comes closer, and louder as it moves away. It is said to be the sound of the aswang’s wings, or of its call, and hearing it is a warning. The sigbin, or zigbin, is a creature like a Tasmanian devil, a small, fierce animal that walks backwards, with its head lowered between its hind legs, and is said to be kept as a pet by witches. The weredog is a man who turns into a dog, or a dog-like creature, and runs through the night. The witch is a woman who uses sorcery to harm her neighbours. Each one is an aswang, and each one is different.
Four hundred years of reports
The aswang has been written about for longer than any other cryptid in South-East Asia, and its written history begins with the Spanish. The first written record of the aswang appears in 1589, in a report by the Franciscan missionary Juan de Plasencia, who wrote about the “osuang” among the “priests of the devil” of the Philippines. The Doctrina Christiana, the first book printed in the Philippines, published in 1593, also mentions the aswang, and it treats the creature as a real and present danger, a demon that the Spanish missionaries were determined to drive out.
The Spanish did not invent the aswang. They found it already there, already believed in, already feared. The creature’s roots are older than the Spanish, and they are contested. Some scholars trace the aswang to the thirteenth-century Malay penanggal, a creature that also detaches its head and flies at night. Others trace the word to the Sanskrit asura, a demon or a god, and suggest that the aswang is a pre-Hispanic deity, demonised by the Spanish. In Bicol, in the south of Luzon, there is a god called Asuang, and some scholars have suggested that the aswang is the same figure, transformed by colonialism from a god into a monster.
The Spanish used the aswang, whether they intended to or not. The babaylan — the indigenous priestesses and healers of the Philippines, who were mostly women — were a threat to Spanish rule, because they held spiritual authority that the Church could not control. The Spanish, it has been argued, used the fear of the aswang to suppress the babaylan, by associating the priestesses with witchcraft and with the aswang itself. A woman who healed the sick and spoke to the spirits could be called a witch, and a witch was an aswang, and an aswang could be killed. The monster, in this reading, was a weapon, and it was used against the women who held power before the Spanish arrived.
What the witnesses describe
The descriptions of the aswang are consistent across four centuries, and they are specific in a way that sets the creature apart. By day, the aswang is an ordinary person, indistinguishable from anyone else. By night, it changes. The manananggal splits at the waist and flies. The tik-tik flies as a bird. The weredog runs on four legs. The witch stays human, but uses sorcery. The aswang is said to have a distinctive smell, and to avoid garlic, salt and holy water, and to be repelled by the sound of a rooster crowing at dawn.
The manananggal is the form most often described, and its description is the most vivid. It is said to be a woman, ordinary by day, who at night grows wings and flies, seeking out pregnant women. It feeds, in the accounts, by inserting its long, thread-like tongue into a house through a window or a crack in the wall, and reaching the woman inside. The description is, by modern standards, restrained: the old accounts do not dwell on the details, and neither do the modern ones. The manananggal is a creature of the night, and the night is enough.
The theories
The theories about the aswang fall into two groups, and they say more about the theorists than about the creature. The first group treats the aswang as a real, physical creature, and suggests candidates. Some writers have suggested that the manananggal is a misidentified animal — a large fruit bat, or a flying fox, seen at night, whose wings and size could be mistaken for a flying woman. Others have suggested that the tik-tik is a real bird, whose call is mistaken for a monster’s. These are guesses, and none of them is supported by any physical evidence.
The second group treats the aswang as a cultural artefact, and this is the reading the scholarship supports. The aswang, on this view, is a way of explaining misfortune: a miscarriage, a sudden death, a crop failure, a child who falls ill. When something terrible happens, and there is no explanation, the aswang provides one. It is also a way of policing behaviour: a woman who is too independent, too outspoken, too powerful, can be called an aswang, and the accusation is a way of bringing her back into line. The aswang, in this reading, is not a monster. It is a social mechanism, dressed as a monster.
Why the story endures
The aswang endures because it is still believed, and still feared, in the Philippines. Surveys of Filipino belief have found that a large proportion of the population, including educated, urban Filipinos, believe in the aswang, or at least do not dismiss it. The creature is part of the culture in a way that few cryptids are: it appears in films, in television, in comics, in novels, in children’s stories, and in the daily conversation of people who have never seen one and never expect to. The aswang is not a curiosity. It is a fact of life, or at least a fact of the imagination, and the imagination is enough.
It also endures because Capiz endures. The province of Capiz, on Panay, is still called the home of the aswang, and the province has, over the years, both embraced and resisted the label. Tourists come to Capiz looking for the aswang, and the province, at times, has tried to use the reputation to attract visitors, and at times has tried to shake it off. The aswang is a burden and a brand, and it is both at the same time.
What is documented, and what is not
Documented facts: The aswang is a catch-all term in Filipino folklore for a family of evil spirit-like creatures. The folklorist Maximo D. Ramos divided the aswang into five categories: the ghoul, the vampire, the viscera sucker, the weredog and the witch. The manananggal, the viscera sucker, is described as an ordinary woman by day who at night splits at the waist, grows bat-like wings, and flies; the name comes from the Tagalog word tanggal, meaning to detach. The first written record of the aswang appears in 1589, in a report by Juan de Plasencia, and the Doctrina Christiana (1593) also mentions it. The creature is concentrated in the western Visayas, and Capiz province is named most often as its home. In Ilocano tradition, there is also a male viscera sucker. No body, skeleton, photograph or DNA sample of an aswang exists.
Unverified or disputed claims: That a woman can split at the waist and fly, or that any of the aswang’s forms is a physical creature, rests entirely on folklore and on eyewitness testimony, none of it independently verified. That the aswang is descended from the thirteenth-century Malay penanggal, or from the Sanskrit asura, or from the Bicol god Asuang, are hypotheses by scholars, not findings. That the Spanish used the fear of the aswang to suppress the babaylan is an argument by historians, not a documented policy. That the CIA capitalised on the legend during the Cold War is attributed to Edward Lansdale and reported, not proven. That X-linked dystonia-parkinsonism explains sightings of the manananggal is a hypothesis, not a finding.
Sources
- https://blog.alamatbookseries.com/posts/2025-07-16-the-aswang-~-part-1
- https://godsandmonsters.info/manananggal/
- https://www.researchgate.net/publication/328706816_Performing_the_Body_in_Filipino_Narratives_The_Manananggal_Viscera_Sucker_in_Colonial_Literature
- https://midnightarchives.com/what-is-aswang/