Do you have a fear of snakes? Well, you're right to do so! Snakes kill on average 50,000 people around the world each year. Most of these deaths come about as a result of humans unknowingly stumbling upon a snake.
3. Tsetse Flies
This blood-sucking fly is the main carrier of African Sleeping sickness and it is therefore indirectly responsible for the deaths of up to 250,000 people every year.