Here is a detailed explanation of the bizarre legal phenomenon known as medieval animal trials.
Introduction: The Defendant was a Pig
From the 13th to the 18th centuries, a strange chapter of legal history unfolded across Europe. In courts from France to Russia, animals—ranging from pigs and bulls to weevils and locusts—were formally indicted, provided with defense lawyers, tried by judges, and often executed for crimes against humans or God.
These were not informal lynchings by angry farmers; they were procedurally rigorous legal affairs. The trials adhered to the strict letter of the law, suggesting a worldview radically different from our own regarding the moral agency of animals.
The Two Categories of Trials
Legal historian E.P. Evans, who wrote the definitive 1906 text The Criminal Prosecution and Capital Punishment of Animals, categorized these proceedings into two distinct types based on the jurisdiction and the animal involved.
1. Secular Courts: Domestic Animals (Thierstrafe)
Domesticated animals (pigs, cows, horses, dogs) were tried in civil or criminal courts. Because they were owned by humans and lived within human society, they were treated as individuals capable of committing felonies, usually homicide or assault. * The Punishment: If found guilty, the animal was usually sentenced to death. The execution methods mirrored those used on humans: hanging, burning at the stake, or burying alive. * The Most Common Defendant: The pig. Swine were allowed to roam freely in medieval streets and often entered houses, leading to tragic incidents where they attacked or ate infants in cradles. Consequently, pigs make up the vast majority of recorded execution records.
2. Ecclesiastical Courts: Vermin and Pests (Thierprozesse)
Wild animals, swarms, and pests (rats, weevils, locusts, slugs) were tried in church courts. Since these animals were not "owned" and could not be physically detained, civil courts had no power over them. * The Punishment: You cannot hang a swarm of locusts. Therefore, the goal of these trials was spiritual: excommunication or anathema (cursing). The church would command the creatures to leave a district. * The Procedure: These trials were surprisingly fair. The pests were often granted court-appointed defense attorneys who would argue that as God’s creatures, the insects had a divine right to eat plants.
Notable Case Studies
The Sow of Falaise (1386)
This is perhaps the most famous animal trial. In Falaise, France, a sow attacked a child, eating part of his arm and face. The child died, and the pig was arrested. The court sentenced the pig to be maimed in the head and forelegs (mirroring the injuries of the victim) and then hanged. * The Spectacle: The pig was dressed in human clothes—a waistcoat, gloves, and breeches—for the execution. The local magistrate ordered the town’s pig owners to bring their own pigs to witness the execution, serving as a warning to the other swine to behave.
The Autun Rats (1522)
In Autun, France, the rats of the province were charged with destroying the barley crop. They were defended by the famous jurist Bartholomew Chassenée. * The Defense: When the rats failed to appear in court, Chassenée argued they had not been properly summoned. The court ordered a summons be read in every parish. When the rats still didn't show, Chassenée argued that the local cats made the journey too dangerous for his clients, invoking the right of a defendant to refuse to appear if their life is at risk. He successfully delayed the trial indefinitely.
The Trial of the Weevils (1545)
In St. Julien, France, weevils were ravaging the local vineyards. The case lasted for months. The defense argued that weevils were created by God and thus had a right to sustenance. * The Compromise: The town actually designated a specific plot of land outside the village for the weevils to inhabit, provided they left the vineyards alone. The defense lawyer, however, rejected the land, arguing it was barren and insufficient for his clients. The outcome of the case was lost to history (likely because the documents were eaten by rats or insects).
The Legal and Philosophical Rationale
Why did they do this? It is easy to dismiss our ancestors as superstitious, but these trials were grounded in the intellectual frameworks of the time.
1. Hierarchical Order and Divine Law Medieval society was obsessed with order. The "Great Chain of Being" placed God at the top, followed by angels, humans, animals, and plants. When an animal killed a human, it was not just a tragedy; it was a subversion of the divine hierarchy. The trial was a ritual to restore order. By treating the animal as a criminal, society reasserted human dominance.
2. The Biblical Precedent Jurists cited Exodus 21:28: "If an ox gore a man or a woman, that they die: then the ox shall be surely stoned, and his flesh shall not be eaten." This provided a direct scriptural mandate for executing homicidal animals.
3. Moral Agency There was a lingering belief that animals possessed a degree of rationality and moral agency. If an animal could obey a command (like a dog or a horse), it could also choose to disobey. Therefore, it could be held criminally liable for "malice."
4. Psychological Closure In an era before insurance or modern policing, the death of a child or the loss of a crop was devastating and inexplicable. A trial provided a scapegoat. It offered a formal, community-sanctioned way to channel grief and anger.
The Decline
The practice of animal trials peaked in the 16th and early 17th centuries but began to fade with the Enlightenment. As the scientific understanding of animal instinct grew, the idea that a pig could harbor "criminal intent" became absurd to legal scholars.
By the 18th century, animals were viewed less as moral agents and more as property. If a dog bit someone, the owner was sued for negligence; the dog was not put on the stand. The last recorded animal trial in France occurred in 1750, involving a donkey.
Today, these trials serve as a fascinating window into the medieval mind—a world where the boundaries between human and animal, and between legal and divine law, were far more porous than they are today.