Mula Sem Cabeça: The Headless Mule and the Woman Cursed for Her Sins With a Priest

The Mula Sem Cabeça, the Headless Mule, is one of the most distinctive creatures in Portuguese and Brazilian folklore, a supernatural being that is simultaneously terrifying and pathetic. She is a woman who has been cursed — in the most common version of the tradition, a woman who had a sexual relationship with a Catholic priest — and who is transformed into a headless mule on certain nights of the week, typically Thursdays and Fridays, compelled to run through the countryside with fire blazing from the stump of her neck where her head should be, making a terrible noise, frightening everyone she encounters, and returning to human form at dawn.

The specific sin that produces the curse varies by version and by region. The priest relationship is the most commonly cited in Portuguese tradition, which positions the curse as punishment for a specific transgression against the religious and social order: a woman who enters into a relationship with a celibate priest is violating both sexual morality and religious hierarchy simultaneously, and the punishment transforms her into something that embodies the indignity and terror that such a violation deserves. Other versions cite a woman who kicked a consecrated host, who desecrated a church, or who committed some other specifically religious transgression.

The Transformation

The transformation into a headless mule is involuntary and distressing. The woman does not choose it and cannot prevent it. She wakes as a mule, already running, already terrifying, with no control over the course her body takes through the night. The fire from her neck stump is both a marker of her supernatural state and a source of pain, and the accounts of the Mula Sem Cabeça consistently emphasise the suffering of the transformed woman rather than simply the terror she causes.

This sympathy for the cursed figure is one of the tradition’s most interesting aspects. The Mula Sem Cabeça causes terror but she is also herself in a state of terrible suffering, unable to control what she does, condemned to repeat the transformation indefinitely unless someone frees her. The people who run from her and the people who encounter her are all victims of the curse, which is more sophisticated morally than a simple monster story.

Breaking the Curse

The curse can be broken in the tradition by a specific act: finding the mule during her transformation and removing her bridle, or in some versions drawing blood from her without using a weapon specifically made for that purpose. The person who breaks the curse must be brave enough to approach the blazing headless mule, which requires considerable courage, and must perform the specific act correctly without being killed by the frightened and suffering creature.

The person who successfully breaks the curse discovers the woman beneath the mule when dawn comes and the transformation reverses. The woman retains no memory of her transformed state, which is consistent with the tradition’s presentation of her as a victim rather than as a willing participant in the supernatural.

The Brazilian Tradition

The Mula Sem Cabeça tradition is particularly well-developed in Brazil, where it was brought by Portuguese colonists and adapted to the Brazilian interior landscape. The creature in Brazilian tradition, called the Mula-sem-cabeça, is one of the most widely known supernatural figures in rural Brazilian culture and appears in literature, film, and popular culture in ways that reflect how thoroughly it embedded itself in the Brazilian supernatural imagination during the colonial period.

For more on the folklore of Portugal, the Bruxsa article covers the Portuguese vampire witch whose supernatural nature also involves a transgressive relationship with diabolical power. The Homem do Saco article covers Portugal’s great child-threatening figure. The Portugal folklore hub page has every article in the cluster.