Vasiliev animal

Snakes on land are scary, sure, but when it comes the fear factor, sea snakes are on an entirely different playing field. Take the Dubois sea snake, for instance. This Australian serpent is the most venomous sea snake out there, and one of the top three most dangerous snakes in the world. And if snakes make your skin crawl, then you'll relate to these 20 Childhood Fears That Stick with You Until Adulthood.

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According to the World Health Organization, about 725,000 people are killed every year by mosquito-borne diseases. Malaria alone affects 200 million, of which an estimated 600,000 die. Mosquitoes also carry dengue fever, yellow fever and encephalitis.

The sheer number of mosquitoes adds to the risk they pose to humans. Unlike many other dangerous creatures, they can be found in nearly every part of the world at various times of year, and at peak breeding season they outnumber every other animal except ants and termites.

What would you say is the world's most dangerous animal? A shark? A tiger? What about a crocodile?

Although these apex predators are terrifying killers, the world's deadliest animal, year after year, is actually something much smaller - the mosquito.

Here are some of the world's deadliest animals.

Yes, white-tailed deer can hit top speeds of 35 miles per hour. Think that's fast? Reindeer can run up to 50 miles per hour.

Horses can make 17 facial movements, which is 3 more than chimps and only 10 fewer than humans, according to a 2015 study published in PLOS One.

Cows have stronger social ties than you might think. One 2013 study conducted by researchers at the University of Northampton found that when cows were separated from their BFFs, their heart rates increased as a sign of stress.

Snow leopards have less-developed vocal cords than their fellow large cats, meaning that they can't roar, but make a purr-like sound called a chuff instead. For a 2010 study published in the Biological Journal of the Linnean Society, scientists researched why some cats have a higher-pitched meow than others. They found that it's not size that determines a kitty's call, but habitat.

Their legislative powers, however, are still up for debate.