Though the Tsetse fly is small, the damage it creates is enormous. They are commonly found in Africa, these insects feed on the blood of mammals. The bite carries a parasite that causes Sleeping Sickness in humans which is described as a "slow, agonizing and certain death." It starts with flu like symptoms that worsen with uncontrollable mood swings. The parasite spreads through the bloodstream and affects the functionality of internal organs and the nervous system. This illness comes to an end when the infected person falls into a coma and dies.