Killer bees, also known as Africanized honey bees, are a hybrid of African and European honey bees. They were first introduced to Brazil in the 1950s and have since spread throughout the Americas. These bees are known for their aggressive behavior, especially when their hive is threatened, and they can chase intruders for long distances. Despite their reputation, killer bees play a crucial role in pollination, just like other honey bee species. They produce honey and contribute to the ecosystem by helping plants reproduce. Understanding their behavior is important for managing their presence and ensuring safety around them.