Africanized Honey Bee

An experiment gone wrong, in 1957 a Brazilian bee keeper who was trying to interbreed European and African honey bees accidently let some of his pets get away. Much more aggressive than their European counterparts, these genetically mixed killer bees have since then spread through out the Americas. They have come to be feared in some regions because of their tendency to swarm relentlessly and aggressively chase their victims for miles.