During the early 16th century, medieval ecclesiastical trials against animals were surprisingly common across Europe, but one of the most remarkable legal proceedings occurred in 1519 in the New World. Franciscan monks residing in the province of Piauí found themselves locked in a desperate struggle against aggressive leafcutter ants. The ants were destroying the monastery's food supplies, raiding flour stores, and undermining the structural integrity of the buildings.
Rather than resorting solely to extermination, the monks filed a formal lawsuit against the ant colonies in ecclesiastical court, accusing them of theft and destruction of church property. Remarkably, the court appointed an advocate to defend the ants. The defense attorney presented a compelling argument, pointing out that God created ants prior to humans and bestowed upon them the right to feed themselves to survive.
He argued that the ants were industrious creatures merely following their divine instincts, whereas the monks were being lazy for not securing their food properly. The judge was persuaded by the defense and reached an extraordinary compromise. He ordered the monks to assign a specific plot of land designated exclusively for the ants to forage.
The court then solemnly read the verdict aloud in front of the anthills, commanding the insects to move to their new allotted territory immediately. According to church records of the era, millions of ants complied and relocated in orderly lines, leaving the monastery in peace.