What is the deadliest animal on earth?

mosquito The mosquito is the single deadliest, most dangerous animal in the world and also one of the smallest. Mosquitoes are estimated to cause between 750,000 and one million human deaths per year.

a-z-animals.com - The Top 10 Deadliest Animals in the World

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Key Points:

Some animals are deadly due to being large and aggressive such as the hippo and elephant. Other animals on this list are some of the top deadliest animals in the world because of the diseases they carry. Snakes are among the most feared on this list, but the most surprising animal would be Freshwater Snails.

Animals are all around us.

Because of their close proximity, many people take for granted how truly dangerous some of the animals that are right within our communities really are. What is the most dangerous animal in the world?

In this article, we’ll discuss the 10 most dangerous animals in the world ranked by the number of deaths that they are responsible for with some adjustments made for aggression, percentage of fatal attacks, and other similar factors. What is the most dangerous animal in the world? These are the 10 deadliest animals in the world:

#10. Sharks

A Great white shark, Carcharodon carcharias, jumping out of the water. Great whites are the world’s largest predatory fish. ©Martin Prochazkacz/Shutterstock.com While sharks are commonly portrayed in movies and television shows as deadly killers, the reality is much different. Worldwide, sharks account for only several hundred attacks on humans, and they only average six to seven human deaths per year.

In the United States, sharks cause about one death every two years.

The species responsible for the highest percentages of fatal attacks are the great white shark, the bull shark, and the tiger shark. Over 375 shark species have been identified, but only about 12 of those species are considered dangerous. The average shark bite can generate up to 40,000 pounds of pressure per square inch; however, your odds of getting attacked and killed by a shark are only 1 in almost 3.5 million. These animals are labeled as dangerous; however, sharks are most often the victims. They’re killed by the millions every year due to the high demands for their fins. Such demands for shark fins lead to illegal fishing, over fishing, which is depleting the shark populations all over the world.

#9. Elephants

An Elephant challenges the photographer in the wilds of Africa. Elephants are the world’s largest land animal, with male African elephants reaching 3m tall and weighing between 4,000 -7,500kg. ©Peter Betts/Shutterstock.com We normally think of elephants as smart, friendly creatures, and they have been a staple of circus performances for many years. The reason they perform so well is because of their intelligence and their complex emotions and social structures, but their status as the largest land animal means that they have an immense amount of weight and the associated power that comes along with it. Elephants in captivity are capable of anger and retaliation, and those in the wild can be territorial and protective of their family members. An average of 500 people per year are killed during encounters with elephants by being trampled, thrown, crushed, and other similarly unpleasant means.

#8. Hippopotamuses

An aggressive hippo male (Hippopotamus amphibius) attacking the car of tourists. Huge hippo males intimidate their opponent with mock charges. ©PhotocechCZ/Shutterstock.com The hippopotamus ranks third in size amongst the largest land mammals behind the elephant and the rhinoceros, and they are responsible for about 500 fatal human encounters each year just like the last entry on our list. However, they earned a higher spot due to their reputation for violence, aggression, and their extremely territorial nature. Hippos have even been known to attack boats for encroaching upon their habitat, and they can use their sharp teeth that grow up to 20 inches long very effectively. They attack by biting, trampling, and will hold their adversary underwater until they drown.

#7. Tsetse flies

Tsetse flies are found in Africa, living in damp areas along the banks of rivers and lakes. They are the size of a large housefly and feed only on blood. ©Jaco Visser/Shutterstock.com The tsetse fly is the first of several insects to make our list of the 10 deadliest animals in the world. As is the case for the bugs to come, it is not the actual bite of the tsetse fly that kills humans but the resulting infection that proves fatal. The tsetse fly resides in the tropical regions of Africa, and their bite infects the host with a parasite that causes African sleeping sickness. African sleeping sickness is a very difficult disease to treat especially given the lack of medical resources in the area, but without treatment, the disease is fatal without exception. Due to the remoteness of the region and lack of verified information, mortality estimates range as high as 500,000 but more reliable sources indicate that around 10,000 people die each year after being bitten by the tsetse fly.

#6. Kissing Bugs

Assassin bugs or “kissing bugs” get their names from their habit of biting humans on the face near the lips while they sleep. ©Vanessa Becker-Miller/Shutterstock.com Assassin bug is the collective name used to refer to over 150 species of insects that possess a specific type of curved proboscis. This proboscis is used as a tool, for defense, and also to hunt, and the propensity of these species to target the soft tissue regions around the mouths of humans is what earned them their more commonly known name of kissing bug. Found throughout the world, most kissing bugs are no threat to humans besides an abnormally painful bite; however, several species that inhabit Central and South America transmit a dangerous disease called Chagas disease. Even without treatment, mortality rates are low from Chagas disease, but the widespread nature of the parasitic infection means that even the five percent death rate causes between 12,000-15,000 deaths per year from organ failure resulting from the parasitic infection.

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#5. Crocodiles

A wildebeest being attacked and killed by a crocodile. Crocodiles have been around since the age of the dinosaurs. ©Phil Hyde/Shutterstock.com The next apex predator entry on our list of the deadliest animals in the world is the crocodile. Responsible for somewhere between 1,000-5,000 deaths annually, the crocodile is one of the largest, most aggressive, and most dangerous animals in the world. Weighing in at over 2,000 pounds, crocodiles possess immense bite strength and can travel at speeds up to 25 mph. Crocodiles are the sole entry on this list that actively hunt and prey upon humans. The deadliest species is the Nile crocodile which lives in the regions surrounding the Nile river, and they were so feared by ancient Egyptians that they carried tokens of their crocodile god for protection from the reptiles.

#4. Freshwater Snails

Aquatic snails have two tentacles and land snails have four, with the eyes located at their tips (land snails) or at their base (aquatic snails). Snails depend on their senses of smell and touch and on chemosensory organs to navigate their world. ©Vitalii Hulai/Shutterstock.com Surprisingly enough, the next deadliest animal on our ranking is none other than the freshwater snail. Much like the other less overtly threatening species that we have mentioned, it is not the snail that directly kills humans but the disease that they transmit. According to World Health Organization estimates, several million people are diagnosed with a parasitic infection called schistosomiasis every year and somewhere between 20,000 and 200,000 of those cases are fatal. Schistosomiasis causes severe abdominal pain and blood in the urine of the infected, but it is not generally fatal outside of developing countries. The wide range in possible deaths is the result of spotty governmental reporting and the lack of medical care in these remote areas and underdeveloped nations.

#3. Dogs/Wolves

A wolf snarling over its prey to protect it from competitors. Wolves are legendary because of their spine-tingling howl, which they use to communicate. ©Peter Ivanyi/Shutterstock.com

Man’s best friend is also one of our deadliest threats.

Dog attacks have led to 30-50 deaths in the United States alone each year. Many of these mauls resulted from one lone dog, often a family dog or one belonging to a neighbor. Others killings were from feral packs of dogs. Directly fatal dog and wolf encounters are exceedingly rare in comparison to the number of deaths resulting from canine transmitted rabies infections. We are several hundred years removed from when wolf packs actively hunted humans in India causing over 200 deaths per year in the 18th and 19th centuries, but 40,000-50,000 deaths annually are caused by the rabies virus alone. Again, the vast majority of those deaths take place outside of first-world countries and are the result of a lack of advanced medical care. Rabies transmission from wolf species is much lower than those from dogs, but they are not zero.

#2. Snakes

Spectacled cobra, Naja naja, Bangalore, Karnataka. The Indian cobra is one of the big four venomous species that inflict the most snakebites on humans in India. ©RealityImages/Shutterstock.com It turns out that the fear of snakes or ophidiophobia may not be so unreasonable after all. Snakes account for over 100,000 fatalities a year based on conservative estimates. A worldwide shortage of antivenin as well as the remote locations inhabited by some of the most venomous snake species all contribute to this high death toll. While many people fear large snakes like boa constrictors and anacondas, the snake responsible for the most deaths is actually the Indian saw-scaled viper which only measures up to three feet long! Also called the carpet viper, this snake resides in Africa, the Middle East, and India, and the females of the species are more than twice as venomous as the males. Aside from the high death rate, the carpet viper’s venom is a neurotoxin that causes an extremely high number of amputations in those victims that it doesn’t kill outright. Out of all the venomous snakes in the world, the Inland Taipan is supposed to be the most elusive and toxic. The Inland Taipan, a native of Australia, can envenomate in consecutive bites in the same attack. Although they are one of the most deadliest creatures on the planet, they are very shy and reclusive. So much so that there have been a handful sightings so far. whenever they are confronted by humans, their first instinct is to run, they possess a temperate nature and only attack if they feel threatened or cornered.

#1. Mosquitoes

Close up of Mosquito (Aedes aegypti) sucking blood on human skin. ©Digital Images Studio/Shutterstock.com The mosquito is the single deadliest, most dangerous animal in the world and also one of the smallest. Mosquitoes are estimated to cause between 750,000 and one million human deaths per year. They are a vector for many diseases that are deadly to mankind including malaria, dengue fever, and the West Nile and Zika viruses. Malaria alone accounts for over half a million fatal infections annually. Only the female mosquito feeds on humans with the male feeding on nectar. Some scientists have estimated that potentially half of all human deaths since the beginning of our species may be the result of illnesses transmitted by mosquitoes.

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Even without such a wild historical estimate, the mosquito has solidly cemented its place at number one on our list of deadliest animals with both their aggression and the deaths of nearly one million people per year. Thankfully, only a handful of the entries on this list are capable of direct, intentional attacks on humans, and the majority of the deaths caused by others occur in rural areas or developing countries with limited access to healthcare. This means that as quality healthcare is more widely available we can expect to see a significant decrease in mortality rates from a number of these animals.

Honorable Mentions

There are many more creatures across the globe that are known for having the ability to kill with very little effort. Here are the honorable mentions that almost made our list.

Box Jellyfish

According to the National Oceanic and Atmospheric Administration the Box Jellyfish, native of Indo-Pacific Ocean, is the most venomous marine creature in the world. They resemble a cube with 15 tentacles growing up to 10 feet in length. They have transparent bodies and their tentacles are made of nematocysts, cells that contain toxins. Once they are stung, the venom attacks the heart and nervous system simultaneously, incapacitating the victims and making it difficult for them to swim back to the shore. They kill around 20 to 40 humans every year.

Cone Snail

These brown and white marbled snail may look beautiful but they are quiet deadly in nature. They live in warmer tropical waters and close to the shore, hiding near rock formations, coral reefs and sandy shoals. They are not aggressive until you touch them and out comes the sharp teeth containing conotoxins. Once the toxin enters the body it attacks the nervous system and paralyses the victim within seconds. It affords its victim just as much time to smoke a cigarette, hence the name ‘cigarette smell’. Although only a few people have been stung by these killer snails so far, the scary thing is that there is no anti-venom to counter its attack.

Golden Poison Dart Frog

Native to the rainforests of Columbia, these brightly colored amphibians have enough venom in their skin to kill 10 humans at the same time. The poison in their bodies can cause nerves to fail and in turn trigger heart attack in their victims. The indigenous Emberá people have lined their arrows with the venom from these frog for centuries. Although they are deadly, their numbers have dwindled and they have been put on the list of endangered species.

Cape Buffalo

Popularly known as the black death, these usually mild mannered herbivores are known to have killed more hunters in the continent of Africa than any other creature. Although they are quiet harmless when left alone, they become aggressive when their calves, individuals or they entire herd comes under threat.

Pufferfish

The skin, kidneys, muscle tissues, gonads and liver of pufferfish contains tetrodotoxin; which is twelve hundred times more potent venom than cyanide. This neurotoxin can cause the tongue to go dead, vomiting, dizziness, arrhythmia, breathing issues, paralysis. If left untreated the person afflicted can die. More than wild encounters, people fall victim to this neurotoxin when they consume it. The fish is considered a delicacy in Japan and the chef who prepare it require special training and license.

Brazilian Wandering Spider

Unlike other species of spiders, the Brazilian wondering spider does not spin a web and wait for their victims to show up. This hunting behavior is what got them their unique name. If you get bitten by a Brazilian spider, it may cause excessive sweating, drooling, arrhythmia, pain and redness around the bite, deadening of tissues and even death.

Stonefish

Native of Indo-Pacific ocean, this deadly sea dwelling fish resembling actual stones can be quiet deadly to those who unknowingly step on them. Their dorsal fin is equipped with potent neurotoxins that can cause intense pain in their victims.

Blue-Ringed Octopus

The Blue-Ringed octopus carries Tetrodotoxin, a neurotoxin just like pufferfish. However, the Blue-Ringed octopus contains enough toxin to kill a human.

Humans

Notable of all dangerous living beings are the humans. We as a collective have killed more of us than any other species have done so far. Counting all the wars that has been fought over the years, we have killed over 1 billion and have displaced even more. On average, nearly 500,000 deaths are the result of homicide around the world. That number alone would rank the human race as the deadliest threat on our list, and with our increasing population, that number is likely to continue to rise.

Summary

Now that you’ve explored the most dangerous animals in the world on this list, let’s recap: The Top 10 Deadliest Animals in the World 10. Sharks 9. Elephants 8. Hippopotamuses 7. Tsetse flies 6. Kissing Bugs 5. Crocodiles 4. Freshwater Snails 3. Dogs/Wolves 2. Snakes 1. Mosquitoes

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a-z-animals.com - The Top 10 Deadliest Animals in the World

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