Biologist Warwick E. Kerr interbred honeybees from Europe and southern Africa to create the Africanized honeybee. In 1957, the hybrid bee was accidentally released in Brazil by a replacement beekeeper. Since then, the Africanized honeybee has invaded the US and earned the debated nickname of "killer bee". Their aggressive protective behavior has instilled a fear in humans and contributed to their alias.
FACT: Africanized Honeybees follow victims up to 440 yards, while European Honeybees follow for only 50 yards.