In1957,a beekeeper in Brazil trying to beed stronger bees. wanted bees would produce more honey. He mated two species of bees. One of the bee types was the Tanzanian African bee. This was a mistake. When the two bee species mated, they created a third very aggressive bee species. Regrettably, 26of these new aggressive African queen bees escaped from their bee hives. They have since interbred with more common and non-aggressive European bees all around the world.