TOP 20 most venomous snakes in the world

venomous snake

Discover the ranking of the most poisonous snakes in the world

Snakes are natural predators. Each species has its own set of methods for dispatching its prey. Some species utilize their body to immobilize and suffocate their prey, while others use their teeth to bite and inject venom into their prey to kill them.

Many snakes have lethal venoms, and those that do will be classified in this article. Other features, like as length and size, will not be considered in this classification; only those that are venomous, which means harmful, will be examined.

From the least deadly to the most poisonous, from the twentieth most poisonous to the most poisonous in the world, this classification is made. To rank them, we'll sort them according to how quickly the venoms react.

Here are the world's top 20 most poisonous snakes:

20. The King Cobra

king cobra

This snake is the longest among the poisonous snake species. The average length of a king cobra is 3 to 4 meters, while the longest at London Zoo is 5.71 meters. This species weighs about 15 kg.

When confronted with a threat, this snake will spread its headdress and stand about 1.5 meters above the ground to appear threatening, yet it will always try to flee and will only engage in combat if it is in grave danger.

Its venom is the least poisonous of all the snakes in this classification, although it can be quite lethal in huge doses. Attacks by the King Cobra are less common than those by the Indian Cobra.

19. The Common Spearhead


This snake is primarily found in South America, specifically in Brazil, Costa Rica, Venezuela, and Colombia. They dwell in tropical forests as terrestrial snakes, but they climb trees and swim in swamps to get their prey. This snake is a fantastic climber as well as a strong swimmer. It gets its name from its pointed and triangular head, which looks like a spearhead.

It has a length of up to 2 meters. Because this classification is for venomous snakes, it's vital to discuss their venom, which is hemorrhagic and kills the vascular endothelium. The venom in contact with the blood triggers a mechanism that causes blood to coagulate. After 14 to 20 hours after the bite, spontaneous resolution of haemostasis has been seen.

18. The Boomslang


The tree snake is another name for it. Southern Africa, West Africa, East Africa, and Central Africa are all home to this species.

A mature boomslang stands between 1 and 1.6 meters tall, with some exceeding 1.8 meters. It is a poisonous snake, but because it has a small venom gland and does not emit much venom, it is frequently harmless to humans. Nonetheless, because its venom is poisonous enough to induce internal and external bleeding, victims of this snake are frequently killed. Because the venom is delayed acting, symptoms do not appear until several hours after the bite.

Drowsiness, mental disturbances, headaches, and nausea are all possible side effects. Because the venom does not act immediately, the victims have time to take the antidote. The bite of this snake, however, should not be underestimated because, even after taking the antidote, the fangs may have contacted blood vessels, causing the victim to bleed to death in a short period of time without noticing it.

17. The Eastern Diamondback Rattlesnake

Diamondback Rattlesnake

In the United States of America, they can be found from the Mississippi River to North Carolina. They are frequently found in sand dunes, wetlands, palm and pine woods. With a length of 1.7 m, the average weight is 2.3 kg, but with a length of 2.4 m, it can exceed 15 kg. This rattlesnake eats birds and lizards, but likes to eat rodents. In terms of venom and risk, this species' venom produces hypotension, necrosis, and occasionally bleeding, but the most serious impact of its venom is heart failure, which is why it is classified as such.

16. The Striped Bongara

Striped Bongara

It is a reptile species native to China and Southeast Asia that dwells primarily in swampy environments but can also be found in other habitats. This snake is around 1.5 meters long. It is one of the world's most venomous snakes, this its position in this list is not coincidental.

15. The Forked Bongare

It's also known as the ringed bongarus, and it's primarily found in Asia, including Malaysia, southern China, Thailand, Singapore, Indonesia, and a number of other Asian countries. Because they are nocturnal snakes, they exclusively prey at night. They never let grip of their prey until it is dead from the injected venom, thanks to their long fangs.

The venom of this Bongara is particularly poisonous and contains a toxin that prevents the release of acetylcholine from the axons of neurons. This blockage prevents nerve impulses from flowing, resulting in heart and breathing system paralysis. Death comes quickly after.

14. The Green Mamba

Green Mamba

Another extremely toxic mamba. It's usually found along the coast of East Africa. They can reach a length of 2 meters. Birds, bird eggs, terrestrial rodents, and bats are their main sources of food. A bite from this mamba, which is very venomous, can kill an adult human. Its venom is mostly composed of neurotoxins, specifically pre-synaptic and post-synaptic toxins, as well as cardiac toxins.

Although this snake is not particularly aggressive, it has a high fatality rate. Swelling at the bitten location, dizziness, difficulty breathing, erratic heartbeat, convulsions, and respiratory paralysis are all symptoms of a bite. When venom is injected into a bite, the victim dies quickly.

13. Bothrops asper (Central American spearhead)

Bothrops asper

It's an aquatic and terrestrial species that prefers to fly, and it's equally at home in the water and in the trees. Its color, a very specific and natural tint, gives it great hiding abilities. It is one of the most hazardous snakes in Latin America because of its habitat, which is quite close to humans, and its highly lethal venom.

12. The Indian Cobra

Indian Cobra

Because of the marks on the rear of its headdress when it is unfurled, it is also known as the Spectacled Cobra. However, there are others that do not have this marking. It is primarily found in India and South Asia, as its name suggests. It is a nocturnal snake that only emerges around dusk and especially at night.

Being quick and possessing a highly powerful venom that is both neurotoxic and cardiotoxic. Because the amount of poison in a bite is relatively little, and sometimes the bite does not contain venom, the death rate from this cobra is 20% to 30%.

11. The Western Diamondback Rattlesnake

Western Diamondback Rattlesnake

It is primarily found in North America, particularly in Texas, hence its alternative name, Texas Rattlesnake. Because of its massive size, reaching an average length of 1.50 m and weighing about 2.5 kg, and its extraordinarily swift actions, this species is the most dangerous in North America. During the summer, this snake is nocturnal, but in the spring and autumn, it is diurnal.

10. The Striking Adder

Striking Adder

This snake is nocturnal, which means that it only emerges at night. This type of viper is responsible for the vast majority of snake bite injuries in Africa. Its bite can kill a person in as little as 25 hours. It is one of the snakes that attacks at a breakneck speed; in fact, its attack is lightning fast. It warns with hissing sounds and head motions before attacking.

9. The Death Adder

Death Adder

This species, which lives in New Guinea and Australia, is vicious and dangerous, as its name suggests (death adder). This snake frequently attacks its own kind. Its hunting technique is unique in that it blends in with the sand and attacks by surprise, injecting a venom that kills in less than 6 hours. However, it only attacks when a threat is detected.

Lizards, rodents, and birds are their main sources of food. It's roughly a metre long, with a circumference of about 40 cm and a weight of up to 6 kg.

8. The Black Mamba

Black Mamba

Africa is home to this species. Its name comes from the blackish color of its mouth, not from the color of its skin, which varies from metallic brown to olive grey; black mambas can exist, but they are extremely rare. For 1.5 kg, its length is between 2.50 m and 4 m. It is a terrestrial snake, which means it lives on the ground but occasionally climbs into trees to catch its prey. It is also quite agile.

When its environment is endangered, this snake may attain speeds of more than 10 km per hour and even more than 20 km per hour. A dose of 10 milligrams of venom can kill an adult, but a bite from this snake can deliver 100 to 120 milligrams of venom. Its venom contains neurotoxins, which cause the prey's body to become paralyzed. If a man is bitten, he will be unable to talk in less than 20 minutes and will lapse into a coma within an hour, dying approximately 6 hours later.

If you suspect the area you'll be visiting is home to the black mamba, remember to have anti-venom serum with you because you won't have time to receive anti-venom if you get bitten by a black mamba's fangs. This snake is admittedly more hazardous than some of others above it in this ranking, but that is due to its remarkable speed. However, its position here is justified by the efficiency of other snakes' venom compared to its own.

7. The Indian Bongara

Indian Bongara

Afghanistan, India, Pakistan, Sri Lanka, and Nepal are all home to this bongarus species. An adult Indian bongarus can grow to be between 90 centimeters and 1.5 meters in length. Its bite causes little discomfort to the victim, yet its venom can kill a person within two to three hours of being bitten. Its venom is extremely poisonous.

This species is one of the most venomous in South India. They prefer to reside in fields, woodlands, and areas close to human settlements. It's a nocturnal snake that's only active at night, yet it's quite aggressive and bites if disturbed during the day.

6. Caspian Cobra

Caspian Cobra

This is a tiny cobra, measuring between 1 and 1.5 meters in length. It prefers temperate climates, which forces it to move throughout the winter. It's the only creature of its kind that may be found in bushes, grasses, rocky places, and meadows. They also like high altitudes, such as those found in mountain grain fields.

Iran, Afghanistan, Uzbekistan, Tajikistan, Turkmenistan, Kyrgyzstan, Pakistan, and India are among the countries where it is found. Its location is owing to its venom, which is one of the most deadliest in the world. It has a neurotoxic venom with very quick effects, and death happens within an hour of a bite. If the venom was injected during the bite, this cobra had a 73 percent death rate.

5. The Tiger Snake

Tiger Snake

It gets its name from the yellow stripes that run down its body. This snake can only be found in Australia. It is extremely hazardous because its venom, which contains a neurotoxic, is extremely potent and rapid, although it is not particularly aggressive toward humans.

When they are threatened, however, they inflate their necks, hiss, and attack. Its venom has a 30-minute kill time. Its length can range from 1 to 1.80 meters. They live in woodlands, marshes, and rocky areas. In the winter, they enter a hibernating period, which they spend in hollow trees or rocks.

Their diet consists primarily of birds and mammals that they catch in their burrows. They mostly hunt rats and other rodent problems. It is one of the few endemic snakes in the world.

4. The Philippine Cobra

Philippine Cobra

It can extend its cervical ribs, which are quite long, just like all cobras. It ranges in length from 1 to 1.60 meters. It is known as a spitting snake because it can spit venom from a distance of more than 3 meters. As a result, it's best to stay away from this reptile because its venom is lethal and can kill in as little as 20 minutes. If you come across them in the Philippines, avoid approaching them or provoking them, as the threat will make them more aggressive and they will attack. Its bite can be deadly.

3. The Brown Snake

Brown Snake

This aggressive reptile, which is mostly found in Oceania, is one of the world's most venomous snakes, earning it a spot on this list. Neurotoxins and haematological toxins are found in its venom. It has already claimed numerous lives in this country.

It is frequently encountered by humans due to its fondness for populated places and its proclivity for sneaking into homes. These snakes can reach a length of 2 meters. They eat rodents, particularly rats and mice, which is why they prefer populated regions. One of the indigenous species is this one.

2. The Desert Taïpan

Sea snake

This reptile can be found in Australia, but it dwells in a distant location where no humans go. Its venom is extremely potent, and it has been determined to be the most toxic venom ever discovered in a land snake. 250,000 mice, or the equivalent of 100 adult men, can be killed by a single drop.

It's a shy, docile, and frightened creature. It escapes at a high rate when it feels threatened. This snake's attacks are likewise lightning rapid. Because its venom is harmful to humans, it prefers warm-blooded prey. It discharges a venom when bitten that may kill 100 men in less than an hour. Its venom is 100 times more poisonous than that of the diamondback rattlesnake and 25 times more poisonous than that of the cobra. It is a natural killer, and it is a massive and lethal predator from the moment it is born.

It has a wingspan of roughly 2 m, which makes it far from the world's longest snake, yet it is extremely dangerous. It's usually brown, with a dark brown hue, and occasionally a beige tinge. The hue changes depending on the season.

1. Belcher's snake (or Hydrophis belcheri)

snake jewelry

This is a sea snake species, and it is the only one in this classification having this capacity. The Western Pacific Ocean, Vietnam, Indonesia, Thailand, and the Philippines are the most common locations.

This snake is relatively calm and only attacks when provoked. Despite this, it contains the most lethal (neurotoxic) venom, as only a few milligrams are required to kill 1000 people. Death can occur 30 minutes after the bite if anti-venom is not delivered to the sufferer. As a result, it is the world's most venomous snake.

Its venom is extremely poisonous. It is one of the world's most dangerous snakes. This ranking was established based on research conducted by researchers. Because they are all venomous and dangerous snakes, it was vital to analyze even the tiniest details in order to classify them.

Additional information: All snakes in this classification can survive for 10 to 15 years, although some can live for up to 20 years. Some of these snakes' venoms have anti-venom serums available to counteract their effects, but others are still incurable. These snakes in this list are exceedingly hazardous to humans, making them among the world's most dangerous creatures.


Each snake has its own aptitude, talent, and survival mode, as well as a varied method of attacking, immobilizing, or even killing its prey according on the species. We're talking about venomous creatures here, which means they employ their poison to harm their prey by biting or even spitting it. They are extremely dangerous, yet they are also prey for other predators over which they have little control. Because all of these species are small, they are most likely larger than they appear to be.

However, it is never a good idea to upset these snakes, as it is frequently the threat that causes them to attack. The vast majority of attacks are defensive in character. They attack not only to defend themselves, but also to feed themselves. But what about other animals that strike in different ways? What traits do they employ in order to attack their prey? Is venomous snakes' method of operation the most effective?