When stuff like this comes up, I always think about the following story about the great Hanoi Rat Massacre.<p>>During the beginning of the campaign in April 1902 the Government-General of French Indochina hired professional Vietnamese rat-catchers, these would descend into the sewers to hunt the rats down, and be paid for each rat that they had eliminated.<p>A FEW MOMENTS LATER<p>>The rat hunters amputated their tails and then let them escape so they could breed and create more offspring with tails to then repeat the process.[10] Furthermore, there were also reports that some Vietnamese people were deliberately smuggling in rats from outside Hanoi into the city.[10] The final straw for this plan was when French health inspectors discovered rat farming operations popping up in the countryside on the outskirts of Hanoi, that were breeding rats solely for their tails as some sort of "tail creation factories".