Have you ever wondered what the most dangerous animals in the world are? Do you have a pre-conceived idea of what “dangerous” means? There are many different species of animals that pose a grave threat to human life around the globe for one reason or another. These animals are everything from apex predators to insects. Some of them use sheer, brute force during their attacks, others are deadly in their camouflage and hiding techniques, and some are dangerous purely because of the diseases they carry. They all have one thing in common, however: the ability to end a human life – or sometimes multiple human lives – with little effort. Occasionally, this requires almost no effort at all – and the consequences of coming into contact with these animals can be catastrophic. So, what are these dangerous creatures that we share our planet with, and how much of a threat do they really pose? And how likely are we to encounter them? We’ve scoured the internet for information and statistics and compiled this list of the 50 most dangerous animals in the world.
Looking Through the Eyes of a Raccoon
Although raccoons may look cute, they can be a common problem for plenty of people and are now considered to be vermin by many. Found in North America, the northern regions of South America, Canada, and Mexico, they are scavengers that are more than happy to rifle through trash to find a meal.
They come into close contact with humans regularly, and this can be a problem due to the diseases they can transmit if they bite. Although they rarely attack humans, if they feel cornered, they will fight their way out of trouble – which is why they pose a slight danger.
The Bite of the Bug-Eyed Tarsier
This might just be the cutest animal to make a list of the most dangerous animals in the world. However, despite their tiny size and their big, innocent-looking eyes, tarsiers actually have pretty vicious bites, so it’s advised to keep well away from them.
A bite from one of these little creatures can cause people to go into anaphylactic shock – an allergic reaction that can be life-threatening. They are nocturnal hunters with extremely sensitive hearing, allowing them to ambush their prey. You can find them throughout the islands of Southeast Asia.
The Misconception of the Tarantula Hawk
The name “tarantula hawk” might be a little confusing as this creature is neither a tarantula nor a hawk. It is, in fact, a wasp found in Australia, Asia, Africa, the US, and South America. It gets its name because it hunts and eats tarantulas – but luckily, it usually stays away from humans as they prefer living in unpopulated areas.
The sting from a tarantula hawk is considered to be one of the most painful in the animal kingdom and will cause severe pain to anybody unfortunate enough to receive it. However, it’s not fatal, and the intense pain will only last around five minutes.
Swooping in Like a Vulture
Mostly found in Africa and Asia, these scavengers will swoop in on anything on its last legs and merely wait for nature to take its course. Located in North America and Europe, they have even been known to tear their latest meal to shreds before it’s dead.
These predators have little sympathy for life, and as far as they are concerned, if they are getting a good meal, they don’t care what has to suffer for that to happen. As a result, people often portray them as evil and a symbol of death.
Testing the Lynx Effect
The lynx prefers to live a solitary life, away from other animals, including humans. Although they look cute and fluffy, lynxes can be incredibly dangerous if they feel provoked. They are just as temperamental as our domestic feline friends and will deliver a very nasty scratch or bite if feeling threatened.
However, attacks by lynxes on humans are sporadic, as they are more likely to avoid than challenge humans. As a result, they are not considered to be particularly dangerous – although we still wouldn’t want to put that to the test!
Dogs Are Man’s Best Friend
Although considered to be man’s best friend and kept as pets by millions of people around the world, dogs actually pose a serious threat in many areas of the globe. Several countries contain a considerable number of stray dogs – mainly less-developed countries in Asia and Africa – that carry deadly diseases such as rabies.
As a result, dogs are one of the biggest causes of death for humans and are responsible for 25,000 fatalities per year as a result of biting humans. A large number of those deaths come from India, where there is an abundance of stray dogs.
The Blood-Sucking Vampire Bat
Vampire bats are bats with a food source of blood, a dietary trait called hematophagy. In one year, a 100-bat colony can drink the blood of 25 cows. Sleeping cattle and horses are their usual victims, but they have been known to feed on people as well.
However, vampire bats can actually be quite tame, and even friendly to humans.
Therefore, the biggest threat they pose to humans is not the loss of blood but the risk of spreading diseases such as rabies. However, although they are classed as incredibly dangerous for that reason, in some cases, their saliva has been used as a medicine.
Firing Shots Like a Bullet Ant
The bullet ant is no ordinary ant. It has an incredible defense – its bite. It is incredibly painful and can cause paralysis by attacking the central nervous system. They get their name due to the pain of their bite, which said to feel like getting shot by a gun.
Incredibly, it’s thought that this pain will last for 12 hours. They mostly live in South America, where some tribes actually use the bites of multiple bullet ants as part of a warrior’s initiation ceremony. While this does not result in death, it does make the recipient of the bites extremely unwell.
Watch Out for the Brazilian Wandering Spider
The Brazilian wandering spider is a venomous spider located in South and Central America. The name comes from the fact that they wander the jungle floor at night, rather than maintaining a web. This often means they come into contact with humans, and their bites can cause muscle paralysis, leading to breathing difficulties.
Aside from causing intense pain, the venom of the spider can also cause priapism in humans. Erections resulting from the bite are uncomfortable, can last for many hours and can lead to impotence. They are also known as the “banana spider,” as they can often be found hiding in banana plants.
The Piranha’s Bad Rep
Despite the bad reputation they have for attacking humans – largely thanks to cheesy horror movies that are a far cry from reality – piranhas actually prefer to scavenge for their food. However, there are approximately 100 reported injuries from these aggressive fish reported each year, so we’d still suggest keeping your distance!
They are freshwater fish that inhabit South American rivers, flood plains, lakes, and reservoirs, and can be whipped into a feeding frenzy if presented with a tasty meal, especially if they’re particularly hungry. However, more people eat piranhas than piranhas eat humans, so there’s not too much to be scared of here.
The Stealth of the Wolf
Humans have long feared wolves as they can hunt people down with ease due to their effective pack hunting strategies. They are incredibly smart, with strong jaws and a sharp bite that tears at the flesh of their prey. Combine these qualities, and you have a pretty dangerous animal.
The wolf can sense its prey from very far away and even though they no longer attack humans much, when they do, the result is usually deadly. Wolves live in many places around the world, namely North America, Europe, Asia, and North Africa.
The Sleeping Sickness Tsetse Fly
Also known as a “tik-tik flies,” tsetse flies are large biting flies that inhabit much of tropical Africa. They are similar to mosquitos in that they like to drink blood. However, although their bite is particularly unpleasant, it’s the diseases that they spread that make them incredibly dangerous.
Tsetse flies are one of the biggest spreaders of African sleeping sickness, which can cause neurological issues such as a change in behavior, confusion, coordination issues, sleep disturbances, and, if left untreated, death. However, even in areas where the disease occurs, generally, only a small percentage of flies are infected.
Picking Out the Flower Urchin
Flower urchins usually live in the Indo-West-Pacific, typically in rocky pools or coral reefs. Despite looking very pretty, they are highly dangerous, as they have tiny venomous spines that are capable of delivering extremely painful and medically significant stings when touched.
These are considered to be the most toxic – and, therefore, deadly – of all sea urchins, and some accounts state that swimmers have drowned after being stung. However, it is difficult to verify this with an actual account.
The Deadly Cone Snail
Snails seem like innocent little creatures that wouldn’t hurt anything or anyone. However, that’s not strictly true – at least in the case of cone snails, which have teeth that emit a deadly venom into anything they bite. So far, there is no cure for the venom – and a large snail emits enough to kill a human.
After being bitten, the venom affects the victim by stopping the nerve cells from communicating. This will eventually lead to paralysis. They live in waters near the equator – so, if you see one, ignore the pretty pattern on its shell and get away as quickly as possible!
The Sting of the Asian Giant Hornet
Native to East Asia and with an average body length of 1.8 inches, the Asian giant hornet is so large it’s almost unsettling. Its stinger alone is around 0.24 inches long and injects a lethal venom into its victims that attacks the central nervous system.
While a single wasp cannot inject a deadly dose, multiple stings can be fatal even to people who are not allergic. Unfortunately, they tend to sting in swarms and numerous times, which significantly increases the risk of death. The Asian giant hornet kills 30 to 40 people per year in Japan.
Water Monitors and Their Special Skill
From a distance, they might just seem like dopey lizards, but the water monitor is incredibly quick and has a unique skill not many lizards its size have: a huge jump. Besides moving quickly across land, they are exceptionally fast in the water too – and they can climb trees.
This means that if one decides to attack you, there’s not much you can do about it. Also, the water monitor emits a venom when it bites – however, this venom is not fatal to humans. They are native to South and Southeast Asia.
Don’t Step on the Stonefish
Found in the coastal regions of the Indo-Pacific oceans, the stonefish, which reaches an average length of 30 to 40 centimeters and up to 5 lbs in weight, is the most venomous fish in the world, with toxic sacs on each one of its 13 spines.
They disguise themselves on the bottom of the ocean like a stone, aiming to ambush their prey – consequently, it’s not unusual for scuba divers to tread on them. This causes immense pain as the venom is administered, and an antivenom is required to reduce the effects of the painful and potentially fatal sting.
Dodging a Raging Bull
Bulls are adult male cattle – the female equivalent is a cow. Bulls, however, are much more muscular and aggressive and have been an important symbol in many cultures. Additionally, they play a significant role in both beef and dairy farming, as well as in a variety of other cultural activities, such as bullfighting.
A fully grown bull can weigh up to 2000 pounds – most of which is pure muscle – and they’re also equipped with long, thick, sharp horns. They pose a distinct threat to humans that find themselves accidentally encroaching on their territory – for example, unwitting country ramblers that end up in a field with a one.
A Leopard Seal’s Bite Is Worse than Its Bark
Although leopard seals might appear cute, they have a nasty bite to go along with their bark. They have incredibly sharp front teeth, which can be fatal for humans if bitten in the wrong place. Moreover, they are the most formidable hunters of all the seals and the only ones that feed on warm-blooded prey, such as other seals.
Generally speaking, the leopard seal does not harm humans, but they have been known to bite on occasions – and around 20 years ago, one injured a snorkeling marine biologist in the Atlantic so badly they lost their life.
Taking the Lion’s Share
There’s a reason why the lion is known as the king of the jungle. They are pretty much at the top of the food chain on land, and few animals will challenge them. The females go out and do the hunting in groups, while the males stay at home protecting the pride from danger.
Although lions don’t often eat humans, there have been occasions when it has happened. They are incredibly strong and quick – able to run up to 80 kilometers per hour in short bursts, meaning humans have no chance against them if they choose to attack.
Up in the Air with the Clouded Leopard
The clouded leopard might be one of the most beautiful things that can be deadly to humans. They have distinctive markings on their fur, but don’t allow their beauty to lower your guard – they are extremely dangerous!
The clouded leopard might be small, but it makes up for its size with ruthless aggression. They are as agile as a tiger and target small humans. They are native to the Himalayan foothills, Southeast Asia, and China, but their numbers in the wild are dwindling. Currently, there are only around 10,000 of them left.
The Eye of the Tiger
Instantly recognizable by their distinctive black and orange stripes, the tiger is one of the best hunters in the animal kingdom, which makes them worthy of a spot on this list of dangerous animals. Physically, few animals can match them for speed, aggression, agility, or intelligence. They are solitary animals that have been known to attack humans when the opportunity arises.
Incredibly, they have even been recorded leaping from the ground to attack people on the backs of elephants. Due to the destruction of much of their natural habitat in Asia – primarily due to increasing human populations – many tigers have started looking at village and town settlements as their territory and hunting ground.
The Fight of the Portuguese Man o’ War
Although this creature looks a lot like a jellyfish, it is actually a siphonophore, better known as a colonial organism. The stingers – which have occasionally grow to almost 100 feet – hang down into the ocean below the main body, which floats on top of the surface of the water.
The sting is incredibly painful to humans and can cause welts on the skin. Besides, the sting can send the person on the receiving end into a fever and shock. Portuguese man o’ war live in the Atlantic, Indian, and Pacific Oceans.
Jaguars Targeting the Brain
The jaguar is a cunning ambush predator that is ruthless and incredibly powerful at the same time. They are expert climbers and often drop onto their prey without any warning. They can be found in North, Central, and South America, and are dangerous to any person who stumbles into their territory.
Unlike many other big cats, they do not asphyxiate their prey; instead, they use their incredibly powerful jaw to bite through the skull and destroy the brain. Then, they haul the catch into a tree to consume or save for later.
Taken Out By the Assassin Bug
The assassin bug, which lives in the southern area of the United States, Mexico, Central America, and South America, is deadly both to humans and other bugs. It will attack other insects using the sharp spike on the front of its face, injecting saliva that liquefies the insides.
For humans, the consequences can be just as dire. The assassin bug typically bites humans on the face, which can be painful, but they spread the Chagas disease which can lead to heart failure. The assassin bug causes the death of 12,000 people per year.
The Deathstalker Is Following You
Found all over North Africa and the Middle East, the deathstalker scorpion is incredibly venomous. However, while the sting is extremely painful, the venom is not usually powerful enough to kill an adult human – although immediate medical attention will still be required.
A sting will often prove to be fatal in children and the elderly (or in weak adults), on the other hand. An antivenom for their stings does exist, but unfortunately, some of the venom is resistant and untreatable. They usually hide under rocks or in holes, but can accidentally get into small spaces in houses, which is where they pose the most threat to humans.
The Inland Taipan’s Toxic Death
The inland taipan snake – commonly known as the western taipan – has a lot of different toxins in its venom that can be incredibly harmful to humans. If bitten, the neurotoxins, mycotoxins, and hemotoxins will begin attacking the muscles, blood, and nervous system all at once. If an antivenom isn’t administered within 45 mins, the result is death.
However, it’s important to note that, although they are fierce and their venom can kill humans, inland taipans are not commonly known to bite people often. They are endemic to the semi-arid regions of central eastern Australia.
The Drive of the Siafu Ant
Siafu ants, sometimes called driver ants, are incredibly powerful in their numbers. They are nomadic, meaning they travel from place to place, but are found primarily in central and east Africa. Extraordinarily, they are carnivores – and extremely aggressive. If a creature hurts one ant, the whole colony will attack what it perceives to be the attacker.
Despite their small size, they have mighty jaws, and once they latch onto something, there’s not much hope of it letting go. Although it’s uncommon, siafu ants can kill humans – for example, if a person is unable to get away, they will quickly be overwhelmed and suffocate.
The Dazzling Poison Dart Frog
There is a general unwritten rule in the animal kingdom: if something is incredibly bright and colorful, the chances are it’s very poisonous. Not necessarily, natural predators, these animals stand out to discourage other animals from eating them. That’s the case with the poison dart frog, which lives in Central and South America.
No larger than six centimeters long, they secrete a poison from their skin that is powerful enough to stop a human heart beating. In fact, just one frog contains enough poison to kill 10 grown men. Traditionally, they were used by native tribes to make poison darts for hunting.
The Lure of the Giant Pacific Octopus
Generally, if something has “giant” in its name, you can expect it to be impressively large. With the biggest recorded a staggering 600 lbs and 30 feet across, the giant Pacific octopus certainly doesn’t disappoint. Not only are they the largest octopus in the ocean, but they also live longer than any other octopus.
They have huge tentacles that are used to capture their prey and lure them into their large mouth, which contains a tongue with teeth on it. Like a chameleon, giant Pacific octopi can change their appearance to mimic rocks and highly patterned coral.
The Distinctive Spectacled Caiman
The spectacled caiman is a reptile found in much of Latin America – and is often confused with a crocodile. Their eyes are on top of their head so they can see from pretty much all angles, meaning they can lurk just below the surface of the water and remain ready to ambush prey.
Males can grow up to approximately two meters long, with females usually slightly smaller. The name comes from a bony ridge between their eyes that gives the appearance of a pair of spectacles – in this sense, they are easily identifiable from other species of caiman.
En Mass Charging Cape Buffalo
Many herd animals can be dangerous if they decide to charge, and the cape buffalo are perhaps some of the better known for charging en mass. Weighing up to a ton and growing as long as 6 feet, they are certainly not a species to be messed with.
Working together, they can easily take down a lion and have even been known to trample lion cubs to prevent them from growing into adults. Animal Planet claims the buffalo have great memories and can remember anyone who mistreats them, returning years later to punish them.
African Elephants’ Wild Nature
Elephants, in general, are usually seen as reasonably docile creatures despite their size – in part due to tourists partaking in elephant rides while on an exotic holiday. However, an African elephant in the wild can be an extremely volatile and dangerous creature – in fact, one of the most dangerous in the world.
They can be incredibly defensive over territory and family members, and won’t hesitate to defend either whenever necessary. Because of their colossal size, they have no natural predators and therefore fear very little. Also, their intelligence makes them even more formidable when agitated or angered.
Winding Like a Sidewinder
The sidewinder snake uses its long body to move in a sidewards direction rather than straight ahead, hence its name. It’s a relatively small species, with a typical length of approximately 50 centimeters to 80 centimeters, and found in the desert regions of the United States.
Although sidewinder snakes are venomous, the venom is weaker than many other types of rattlesnake – this, therefore, makes them slightly less dangerous than their larger relatives. However, a bite will still cause pain and extreme swelling, as well as nausea, dizziness, and shock – even after antivenom is administered. If left entirely untreated, a bite can prove fatal.
Don’t Let the Hyena’s Laughing Fool You
Hyenas can often be heard laughing, but don’t let that fool you. They are smart and coordinated hunters. Not only that, they weigh almost 200 pounds, and their jaws are some of the most powerful in the world – strong enough to break bones with ease.
They are scavengers and will only attack if they know they can overcome their prey. Considering their strength and the fact they live in clans, a human is no match. This is what makes a hyena one of the most dangerous animals in the world.
Gorillas’ Quest for Dominance
Although they’re herbivores, gorillas will not hesitate to attack anything they perceive as a threat. They’re incredibly powerful, weighing up to 400 lbs, and can kill a human with ease if they so choose. Located in central Africa, they are usually reserved around humans, but if spooked by sudden movements, will turn aggressive.
However, most gorillas direct their violence toward other gorillas. They live in groups, in which one dominant male silverback controls several females and youngsters. If another male approach, the silverback will try to drive him off. Additionally, gorillas are considered highly intelligent. A few in captivity have even learned sign language.
Beware the Jaws of the Great White Shark
Ever since the blockbuster film Jaws came out in 1975, great white sharks have been widely regarded as one of the most dangerous animals in our oceans. Well, there are a few reasons for that. Namely, they can grow up to 20 feet long and are known for their aggressive hunting techniques.
Also, great white sharks contain approximately 300 teeth that are so sharp they often cause severe damage – if not death – to anybody unfortunate enough to be bitten. They are found in most oceans across the globe and have been known to attack surfers after mistaking them for food.
Pufferfish: A Poisonous Delicacy
Pufferfish pose a significant danger to humans because they are incredibly poisonous. When they inflate their bodies, they release a toxin into the water that can attack the central nervous system, stopping communication from the brain to the body. Their poison is incredibly potent, making them one of the most poisonous animals in the world.
Despite their toxicity, pufferfish are considered a delicacy in Japan, known as “fugu.” However, fugu can only be prepared and served by licensed and specially trained chefs, as one mistake can result in death.
The Paralyzing Blue-Ringed Octopus
The blue-ringed octopus is considered to be one of the most poisonous animals in our oceans. Although they are generally passive, they won’t hesitate to defend themselves if they feel intimidated or threatened in any way. There is enough poison in one blue-ringed octopus to kill a human.
The deadly poison works by paralyzing the muscles of the victim, including the respiratory muscles that facilitate breathing. Once these muscles fail, the only chance of survival is if someone performs CPR to keep the blood flowing around the body. They live in tide pools and coral reefs in the Pacific and Indian oceans, from Japan to Australia.
Grizzly Bear: A Hiker’s Nightmare
Found in North America, the North American brown bear – or grizzly bear, as it’s commonly called – is known for being extremely ferocious. Also, they can grow up to two meters in length and one meter in height so they can take down a human in a few seconds if they want to.
They are incredibly dangerous and super protective of their young, so pose a significant threat to hikers and campers. Despite the size disadvantage, the best way to survive a grizzly bear attack is, allegedly, to make yourself as large as possible and make a lot of noise. We’d rather just avoid it altogether.
Polar Bear: The King of the Arctic
Weighing over 1,500 lbs, polar bears are incredibly dangerous animals. In fact, they are the largest meat-eaters living on land and the most likely to attack a human out of all the species of bears in the world. They are incredibly protective of their cubs and will attack viciously when there is a perceived threat.
They live in the Arctic, where food is scarce – and considering a polar bear can cut off a human head with a swipe of its paw, it won’t hesitate to kill and eat a human if it encounters one.
Saw-Scaled Viper’s Cocktail of Venom
This snake might be the deadliest creature you’ve never heard of before. Found in dry regions in India, Sri Lanka, Pakistan, the Middle East, and Africa, the saw-scaled viper has incredibly powerful venom that contains both hemotoxins and cytotoxins. This venom cocktail can lead to heavy bleeding anywhere in the body and, possibly, an intracranial hemorrhage.
These nocturnal serpents are only small but cause more fatalities per year than any other as they can go mostly unnoticed by humans. Interestingly, they produce the most venom during the summer months, and the males carry more venom than females.
Saltwater Crocodiles and a T-Rex
These amphibians can grow to mammoth proportions, reaching lengths of up to 23 feet and weighing more than a ton in some cases. These prehistoric-looking animals are a throwback to the dinosaurs, and the pressure generated from one of their bites has been compared with that of a T-rex.
Found on India’s east coast across Southeast Asia and the Sundaic region to northern Australia and Micronesia, they are saltwater by name but not strictly saltwater by nature, as they can be found in freshwater too. Stealthy ambush predators, they won’t hesitate to pull anything on the shore into the water – including humans.
Shocking Hippopotamus Death Statistics
This semiaquatic mammal (they spend up to 16 hours a day submerged in rivers and lakes) is native to sub-Saharan Africa and typically eats plants. However, it won’t hesitate to take a huge bite out of a human if it feels threatened – and, even though they might look overweight, they are very fast and agile.
Hippos can weigh up to 3,300 lbs and have attacked people both on land and in the water. These animals are incredibly territorial and won’t think twice about charging at anyone or anything encroaching on their area. In fact, they kill more humans than any other African animal.
The Killer Africanized Honey Bee
Usually, bees only sting when they feel threatened, but the Africanized honey bee is as dangerous as they come. It’s a particularly aggressive type of bee that is responsible for wiping out many of the native bee colonies in the United States. It’s also been dubbed the “killer bee.”
It is a hybrid produced by cross-breeding the East African lowland honey bee with various European honey bees and was brought to Brazil in the 1950s with the intention of increasing honey production. However, they escaped and are now present in South, Central, and North America. They are very protective of their hive and will attack anything in overwhelming numbers if disturbed.
Black Mamba Can Kill Dozens
Native to parts of sub-Saharan Africa, the black mamba is one of the deadliest snakes on the planet. Just one bite from this snake contains enough venom to kill dozens of people. If a human is bitten, an antivenom must be administered within 20 minutes or the bite is likely to prove fatal.
As if that wasn’t enough, the black mamba is the second-longest venomous snake in the world, behind the king cobra – growing up to 14 feet. Additionally, it is the fastest land snake in the world – although its speed is usually used to escape threats rather than attack.
The Shocking Box Jellyfish
The box jellyfish is considered to be the most venomous marine animal in the ocean. They are translucent and found in the Indo-Pacific region and northern Australia.
They have up to 15 tentacles that can reach 10 feet in length. Each has about 5,000 stinging cells, and the venom attacks the heart, nervous system, and skin cells.
Being stung is overpoweringly painful; people have been known to go into shock and drown or die of heart failure before even reaching shore. Survivors can experience considerable pain for weeks and often have significant scarring where the tentacles made contact.
The Rise of the King Cobra
The king cobra is endemic to forest areas throughout Southeast Asia and the most venomous snake in the world. Its venom attacks a person’s central nervous system, causing excruciating pain, vertigo, and paralysis.
The venom is incredibly potent and has the potential to be fatal to even the largest of mammals, including elephants. If left untreated, it can take just 30 minutes to kill a human. King cobras can reach 18 feet in length, making them the longest of all venomous snakes. When confronted, they can raise up to one-third of their bodies straight off the ground and still move forward to attack.
The Komodo Dragon’s Deadly Bite
Native to the islands of Indonesia, Komodo dragons are perhaps the most dangerous – and terrifying – animals in the world. They can pretty much eat anything – including humans if one was unlucky enough to get caught. They are the largest and heaviest lizards in the world – and one of the few that have a venomous bite.
Without any natural predators, Komodo dragons have a deadly approach to catching prey. They deliver a vicious bite using razor-sharp teeth that not only causes heavy bleeding but also poisons the victim. The dragon will then just wait for the victim to die before devouring it.
Mosquito: Spreading the World’s Biggest Killer
Without a doubt, the mosquito can be considered the most dangerous animal in the world. Mosquitos fatally infect around one million people per year with malaria, which is the world’s biggest killer of humans. They do this by feeding on the blood of animals and humans, thereby spreading diseases.
This is not limited to malaria, however. Mosquitos have also been known to transmit yellow fever and dengue fever to humans, both of which can be fatal. There are more than 3,000 species of mosquito that each have adapted to different climates and weather conditions, but the largest populations live in humid tropical regions.