Lobizon

In Argentina, the belief that a seventh male son becomes a werewolf was so strong it became official state policy: to this day, the country's president is invited to be the godfather of every seventh son born in the territory, precisely to try to break this ancient curse. A folk legend so powerful it crossed from folklore straight into official government protocol.

The seventh consecutive son who, by curse, turns into a wolfish creature on Friday nights (especially at full moon), roaming cemeteries and corrals. In the Guarani strand he is the luison, the seventh and most dreadful son of Tau and Keraná, lord of death.

Within the folk and mythological corpus compiled by the Codex Monstrorum, the creature Lobizon occupies a distinctive role in the symbolic imagination of its culture of origin. Its mythos articulates primal human anxieties, the mystery of untamed wilderness, and social norms preserved through the lens of bestiary literature.

Belief in the cursed seventh son was so strong that in Argentina it gave rise to the tradition of the nation's president becoming godparent to the seventh consecutive son — a public policy born of myth to 'break' the curse.

River Plate defenses: baptism of the seventh son (with a prestigious godparent), silver, a blessed knife, fire. The transformation is involuntary and suffered; recognizing and curing the lobizón, rather than killing him, is a frequent theme of the tales.

First appearance and primary records: The werewolf of the Southern Cone (Argentina, Paraguay, Uruguay, southern Brazil), a fusion of the Iberian werewolf with the Guarani myth of the luison; central to 19th–20th-century rural River Plate folklore.

Oral transmissions and preserved manuscripts indicate that legends surrounding Lobizon underwent substantive evolution over successive centuries. From archaic oral traditions to classical and medieval written records, each period reframed the creature according to its own ethical and cosmological paradigms.

A hybrid of man and large dog/wolf, gaunt and foul-smelling, with long claws and teeth; the Guarani luison is described as a hideous being with long fur and the stench of death, tied to graveyards.

It explains the doom of the seventh son and organizes rites of family protection; in the Guarani version it belongs to the mythic order of the seven cursed children. It binds family, sacred number, and death.

A synthesis of the Iberian loup-garou and the Guarani luison; it differs from the European werewolf in the seventh-son rule and in its institutional social response (presidential godparenthood).

Ubiquitous in gauchesco literature, Argentine cinema and television, and Guarani-Paraguayan folklore; with the luison it is one of the most living figures of the South American imagination.