In 1451, the year in Switzerland, the trial of leeches

Sue "bogomerzkih" animals tried the Catholic Church. In the pond near Lausanne found too many leeches, and the local bishop decided to take this mess under his personal control. He sued the animals spoil clean water pond, and made sure that the trial of the form "Leeches against God" was launched.

By the pond was delivered summons prescribing leeches immediately appear in court. When the indication has not been enforced, violators bailiffs gathered together and brought before a judge. Animals brought to trial, and the verdict was read to them: for 3 days to leave the filthy pond and look for another place to live. Unfortunately, history has not kept information about whether the Swiss leech obeyed the law of their country.

via factroom.ru