World’s Deadliest Animal

Deadliest Animal in World Mosquito

The Deadliest Animal in the World

Do you know which animal is most responsible for human deaths each year?

What would be your guess?

Since you’re reading a pest control blog maintained by a Mosquito Control Specialist, you probably guessed the mosquito.

And you’d be correct.

What might surprise you is the disparity between the number of human deaths attributed to mosquitoes compared with other well-known animals that cause people to have phobias and jitters.

So, let’s get started…

Each year, the shark kills less than 10 people per year. 1

It’s the same number for the wolf, 10 per year.

Lions or Elephants? Approximately 100 per year, each.

The hippopotamus? 500 people per year.

Crocodiles? 1,000 per year.

How about tapeworms? 2,000 per year.

At 10,000 per year each we have the freshwater snail (schistosomiasis), Assassin bug (Chagas disease), and the Tsetse fly (sleeping sickness).

Dogs (mostly rabid) account for 25,000 human deaths per year, and snakes claim 50,000 lives per year.

Humans murder other humans at the rate of 475,000 per year.

And the winner?

The mosquito.

Mosquitoes account for approximately 725,000 human deaths per year!

No other species, including our own, is responsible for the loss of as many human lives each year as are mosquitoes.

According to Bill Gates:

Considering their impact, you might expect mosquitoes to get more attention than they do. Sharks kill fewer than a dozen people every year and in the U.S. they get a week dedicated to them on TV every year. Mosquitoes kill 50,000 times as many people, but if there’s a TV channel that features Mosquito Week, I haven’t heard about it.

What follows is a short video by Bill Gates discussing this issue:

Credit: Bill Gates Blog 2

Video duration: 1:19

Mosquito Week


“Bill Gates introduces Mosquito Week on his personal blog, the Gates Notes. Mosquitoes carry devastating diseases like malaria, dengue fever, yellow fever, and encephalitis.”

Begin transcript

“If you ask, ‘What animal, if you got rid of it, would save the most lives”?

It’s got to be mosquitoes.

The numbers of mosquitoes causing death is a mind-blowing thing.

Mosquitoes Cause More Than 700,000 Deaths Per Year

Other than humans killing humans during periods of war, most years the mosquito wins.

The mosquito sneaks up on you, and is biting you, and you feel this little itch.

And you think, ‘Oh, that’s just an itch’.

And you look and your arm’s covered with mosquitoes.

And you’re swatting them and trying to kill them.

When you kill them, a little bit of blood splatters on your arm.

Your body isn’t well defended against foreign things being stuck directly into your blood.

It’s a very efficient way around the human immune system.

This parasite has been out there killing children and sapping the strength of whole populations for tens of thousands of years.

We have to chart a course to end this once and for all.”

End transcript


1 Statistics provided by Gates Notes, published Apr 25, 2014, visit the Blog of Bill Gates.

2 Video courtesy of The Gates Notes, visit his YouTube Channel.