ABV10(31a)Most dangerous animals in the world

 Most dangerous animals in the world

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1. Stonefish

The most venomous fish known to humans is an easy one to miss—which is by design. Stonefish, after all, are named for their visual similarity to rocks, sitting perfectly still and blending right into the seabed where an unsuspecting foot can easily step down on their dorsal fins, primed and ready to attack with potent neurotoxins. The unluckiest clodhoppers will step hard, applying more pressure and increasing the amount of venom that gets injected; they may also trigger the stonefish’s secondary defense mechanism known as a lachrymal saber, which has been likened to a switchblade of the face (yikes). Fatality from stonefish venom can occur within an hour, so victims need to seek antivenom immediately, applying water heated to over 113 °F (45 °C) in the meantime to denature the venom. Much easier is just watching where you step.

2. Mosquito

Clocking in at just three millimeters at their smallest, the common mosquito, even tinier than the tsetse fly, ranks as the second most dangerous animal in the world. Our reasoning: the sheer number of deaths each year, caused by various pathogens that several species of mosquitoes (of more than 3,000 in the world) carry to humans. The irritating insects—primarily those from the genera Aedes, Anopheles, and Culex—are the primary vectors of diseases like malaria, Chikungunya, encephalitis, elephantiasis, yellow fever, dengue fever, West Nile virus, and the Zika virus, which collectively afflict an estimated 700 million and kill roughly 725,000 people each year. As the World Health Organization notes, more than half of the human population is currently at risk from mosquito-borne diseases. 

3. Blue-Ringed Octopus

At the size of a golf ball and decorated with stunning iridescent rings of blue, the aptly named blue-ringed octopus punches well above its weight. This docile animal will attack when threatened, packing a neurotoxin 1,000 times more powerful than cyanide, with no known antidote—not that there would even be enough time to administer it before death occurs. The bite of the blue-ringed octopus is so painless, one might not even feel it happening (which makes it even more remarkable how often people share photos and videos with one in their hand). Even if they decide to spare the human touching them, the experience of being handled depletes the energy of a blue-ringed octopus (like all other wildlife), making survival tougher for them.

4. Tsetse Fly

Often regarded as the world’s most dangerous fly, the tsetse fly—a small speck of an insect that measures between 8 to 17 mm, or about the same size as the average house fly—is commonly found in Sub-Saharan Africa, especially throughout countries in the center of the continent. While the flies themselves are nasty bloodsucking bugs that usually feed during the peak warm hours of the day, their true terror lies in the protozoan parasites they spread known as Trypanosomes. These microscopic pathogens are the causative agent of African Sleeping Sickness, a disease marked by neurological and meningoencephalitic symptoms including behavioral changes, poor coordination, as well as the disturbances in sleeping cycles that give the illness its name. If untreated, the condition can be fatal.

5. Saltwater Crocodile

Florida's alligators may be scary, but they have nothing on their cousin, the fearsome crocodile, which is more short-tempered, easily provoked, and aggressive toward anything that crosses its path. Of all the species in the world, the largest—and most dangerous—is the saltwater crocodile. These ferocious killers can grow up to 23 feet in length, weigh more than a ton, and are known to kill hundreds of people each year, with crocodiles as a whole responsible for more human fatalities annually than sharks (then again, so are cars). Saltwater crocodiles are especially dangerous as they’re excellent swimmers in both salt and freshwater (yes, their name is confusing), and can strike quickly with a bite delivering 3,700 pounds per square inch (psi) of pressure, rivaling that of the T.