24 Surprisingly Lethal Animals

Tsetse Fly

The tsetse fly is responsible for spreading the sleeping sickness across Africa. This disease the kills between 250,000 to 300,000 people each year. When one of these tiny flies infects you, you can expect horrible fevers, intense pain, and wild mood swings that will make you feel like you're losing your mind before you finally slip into a deep sleep and die.