Today, there are 85 million cows in the Brazilian Amazon, which equals three per human inhabitant, grazing in an area that less than fifty years ago was an intact rainforest. Since those days, and after the arrival of thousands of cattle breeders from all over the country, a portion the size of France has disappeared. In 2009, there was a game changer: the Public Prosecutor’s Office sued large slaughterhouses, forcing them to supervise deforestation in cattle supplying farms.