15 Most Venomous Snakes in the World

Most Venomous Snakes
Photo by David Clode

Venomous and non-venomous snake species exist. Some of the most Venomous snakes in the world will be looked at in this article.

Poisonous snakes produce venom as a defense mechanism to immobilize victims. 

Meanwhile, the presence of zootoxins, delivered to the victim by fang bites or spitting, gives snake venom its toxicity. 

A muscular sheath protects the venom-producing glands on either side of the snake’s head.

Proteins are the most abundant component of snake venom, and they are the ones that do the most harm to animals by inhibiting essential enzymes. 

In addition, the toxicity of a snake’s venom is measured using the LD50 test in mice (lethal dose 50 percent).  

This test necessitates using other animals, primarily mice, which are injected with a dose of venom from a specific snake

Furthermore, the study aims to determine which snake venom may kill half of a species’ population. The most venomous snakes have the lowest values. 

Additionally, most of the world’s deadly snakes are found on Australia’s coastline, where they are usually found.

Some of the most Venomous snakes in the world are listed below: 

1. Inland Taipan

Inland Taipan
by grace_kat is licensed under CC BY-SA 2.0

It is considered one of the most Venomous snakes in the world. It can reach up to 2 meters long. Its bite can cause death within minutes. It is mainly found in Australia. 

When provoked, Australia’s rare and solitary inland taipan (Oxyuranus microlepidotus) makes a fierce defense, attacking with one or more bites.

Not only is the inland taipan’s venom very toxic, but it also contains an enzyme that aids in the venom’s absorption into the victim’s body.

Fortunately, the inland taipan is rarely seen by humans. It is not particularly aggressive—except toward its prey, which primarily consists of tiny and medium-sized mammals, particularly the long-haired rat. 

2. Black Mamba

Black mambas are extremely dangerous snakes and one of the most Venomous snakes in the world.

They are also known as “the deadliest snake.” Their venom contains an enzyme called phospholipase A2. This enzyme causes severe pain and swelling. 

In southern and eastern Sub-Saharan Africa, the black mamba (Dendroaspis polylepis) can be found in broad savannah, hill terrain, and forest environments.

It gets its name from the black interior of its mouth, not from its color, which is brownish or grayish-green. 

When confronted, the snake will aggressively defend itself by raising its head, opening its lips, and giving a warning before striking multiple times in rapid succession. 

It’s quickly reaching speeds of up to 12 mph and climbing trees.

When the snake seeks safety in crowded regions, encounters with humans are common, and the black mamba’s venom is particularly lethal. 

3. Australian Brown Snake

Eastern Brown Snake
by Aaron Gustafson is licensed under CC BY-SA 2.0

Australian brown snakes are the second most venomous snake in the world.

They are found throughout Australia. They are about 1.5m long and weigh between 7kg and 10kg. 

The venom comprises two proteins that work together to paralyze their victims. These proteins are PLA2 and SVMP. Both of these toxins are used for killing people. 

4. Green Pit Viper

Green Pit Viper
by mpfl is licensed under CC BY 2.0

Green pit vipers are among the most venomous snakes on earth. They are found in South America, North America, Central America, Mexico, and Europe.

Furthermore, they are also commonly referred to as “Mexican green pit viper” because they were first discovered in the Mexican state of Chihuahua. 

They are named after the color of their skin, ranging from light green to dark olive green.

They are sometimes called “green tree vipers” because they live near water and spend much time under logs and rocks.  

The venom of the green pit viper has been shown to contain neurotoxins that affect the nervous system.  

5. Copperhead

by 2ndPeter is licensed under CC BY 2.0

Copperheads are found in the United States and Canada. They are often confused with rattlesnakes.

Although both species have similar markings, copperheads are smaller than rattlesnakes. 

Additionally, Copperheads are named for the bright red spots on their heads. Some copperheads have no spots at all.

A considerable pit viper found in the eastern and southern United States is the copperhead (Agkistrodon contortrix). 

Furthermore, its five subspecies exist in various environments, from forests to wetlands.

Still, it also thrives in densely populated places, such as suburban developments, increasing the chance of being bitten, even though copperhead bites are rarely lethal to humans. 

In addition, the copperhead stalks rodents, tiny birds, lizards, and frogs by climbing shrubs or trees. However, it’s also capable of swimming.

Copperheads hibernate during winter but emerge to bask in the sun on warmer days. 

6. Cottonmouth

by Greg Schechter is licensed under CC BY 2.0

Cottonmouths are found in the southeastern U.S., where they inhabit rivers, streams, lakes, swamps, marshes, and other wet areas.

They are known for climbing vertical surfaces, including telephone poles and fences. 

Cottonmouths are large constrictors, growing up to 2 meters long. Their bodies are covered in rough scales.

They eat small mammals, reptiles, amphibians, fish, insects, and occasionally carrion. 

7. Dubois’s Seasnake

Dubois's Sea Snake
by Claire Goiran is licensed under CC BY-NC 4.0

Dubois’s sea snake can be found in coastal waters around the globe.

Its habitat includes mangrove forests, saltwater estuaries, coral reefs, seagrass meadows, mudflats, sand flats, and beaches. 

It is one of the giant sea snakes in the world, reaching lengths of more than 3 meters.

In addition, it feeds mainly on crabs, shrimp, mollusks, fishes, and octopuses. It will also feed on turtles.

When tested using the subcutaneous injection LD50 method, the snake’s venom has a toxicity level of 0.044 mg/kg. It feeds on moray eels and other bottom-dwelling fish. 

8. Blue Krait

Blue Krait
by 王朝威 is licensed under CC BY 4.0

Next on our list of the most Venomous snakes in the world is Blue Krait.

Blue kraits are found throughout Southeast Asia, India, Australia, New Guinea, and Indonesia.

They are also common in Africa, Madagascar, and some islands off the coast of Africa. 

Their name comes from the blue coloring of their body and head. They are most commonly seen in grasslands and savannahs.  

The Blue Krait, often known as the Malayan Krait, is a highly venomous elapid snake.

Its venom can paralyze a victim’s muscular system, a terrifying concept that has earned this snake a spot on the list of the world’s deadliest snakes. 

Yellowish-white interspaces separate blueish-black crossbands in the Blue Krait’s color pattern. They can reach a maximum length of about 1.1 meters. 

These Kraits aren’t particularly violent or defensive and only bite when provoked.

They primarily consume other snakes, although they will also devour lizards, mice, frogs, and other small animals. 

9. Eastern Coral Snake

Eastern Coral Snake
by John is licensed under CC BY 2.0

Eastern coral snakes are found in North America, Central America, South America, and the Caribbean. 

Furthermore, the species is divided into two subspecies: the northern coral snake (Micruroides euryxanthus) and the southern coral snake (Micrurocidea fulvida). 

Additionally, they have been known to prey upon other snakes, lizards, frogs, and even small mammals. 

Furthermore, the eastern coral snake (Micrurus fulvius) is the most deadly in the United States, although its bite initially causes little pain or swelling. 

On the other hand, venom contains a potent neurotoxin that impairs speech and eyesight. 

Fortunately, most human bites aren’t lethal. They are cautious, burrowing creatures that feed on lizards, frogs, and other small snakes in forests and marshy wetlands. 

10. Green Mamba

Green Mamba
by hape662 is licensed under CC BY 2.0

Green mambas are native to Africa, where they live in tropical regions. The average size of these snakes is between 4 and 6 feet. 

They prefer living in dense vegetation, such as thickets, swamps, and jungles.

Furthermore, they are nocturnal hunters, feeding primarily on rodents, reptiles, birds, amphibians, and insects. 

They usually hunt alone but sometimes form hunting parties with other members of their species. In addition, they will attack domestic livestock and pets if left unsupervised. 

11. Common Death Adder

Common Death Adder
by mamamusings is licensed under CC BY-SA 2.0

Common death adders are also one of the most Venomous snakes in the world.

They are found in Africa, Asia, and Australia. These snakes are typically around 2 feet long. 

They are active during the day and night. Meanwhile, they feed on small mammals, birds, reptiles, and invertebrates. 

They may strike with their tails and then coil up for defense when threatened.

The death adder is found across broad swaths of Australia in various environments such as rainforests, woods, and grasslands. 

It camouflages behind loose sand, leaves, or low plants, waiting to ambush victims. 

However, to attract frogs, lizards, birds, and small animals, the death adder coil brings the tip of its tail near the head and wriggles it like a worm. 

Additionally, it has long fangs and a grey-to-reddish-brown body with darker crossbands.

Human encounters are uncommon, yet its bite, as the name implies, can be lethal if not treated quickly. 

12. Mojave Rattlesnake

Mojave Rattlesnake
by BLM Nevada is licensed under CC BY 2.0

Mojave rattlesnakes are found in Arizona, California, Nevada, Utah, and Mexico. Their typical length is between 3 and 5 feet. 

Their diet consists mainly of rodents, rabbits, ground squirrels, and lizards. These snakes are considered nonaggressive, so they rarely bite humans unless provoked. 

13. Stiletto Snake

Stiletto Snake
by Joubert Heymans is licensed under CC BY 4.0

Stiletto snakes are found in Southeast Asia, India, Sri Lanka, and the Philippines.

They are also called “stilettos” because of the shape of their heads. This particular type of snake is one of the deadliest in the world. 

Its venom is highly toxic, causing severe damage to the nervous system. This includes paralysis, respiratory failure, and cardiac arrest. 

14. Peron’s Sea Snake

peron's sea snake
by Damien Brouste is licensed under CC BY-NC 4.0

Peron’s sea snakes are found in South America, Central America, and the Caribbean. This particular type of snake is an aggressive hunter. It feeds on fish, crustaceans, and crabs.

Furthermore, the Strait of Taiwan, the Gulf of Siam, the Coral Sea Islands, and other areas are home to the Peron’s sea snake.

When tested using the subcutaneous injection LD50 method, its venom yields a result of 0.079 mg/kg. 

Additionally, the spikes on the skull of the Peron’s sea snake set it apart from other sea snakes.

It has a snout-vent length of 39 inches on average. Rather than laying eggs, it feeds on small fish and gives birth to its young. 

15. Many Banded Krait

many banded krait
by Thomas Brown is licensed under CC BY 2.0

Many Banded Kraits is rounding off our list of the most Venomous snakes in the world.

Many banded kraits are found in Southeast Asia and Australia. They are among the most deadly snakes in the world. 

They have been known to kill more people yearly than any other snake species. 

Additionally, the many-banded krait is native to southern India, Sri Lanka, Cambodia, Thailand, Malaysia, Indonesia, Myanmar, Laos, Vietnam, and China. 

Kraits are highly venomous snakes that grow up to 2 meters (6.5 ft) in length. 

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