The Tsestse fly gives a whole new meaning to the insect known as the fly! Although it looks roughly the same as your average housefly, it can do a whole lot more damage. This fly has the ability to bite large mammals and suck their blood causing a parasitic disease (African trypanosomiasis or sleeping sickness).
This dangerous disease causes painful headaches, fever, joint pain, nausea and vomiting. It also leads to brain swelling and trouble with sleep. It mostly affects people living in Sub-Saharan Africa and approximately 12,000 people die from the disease every year: all because of a tiny fly!