Top 10 Deadliest Snakes: Unveiling the Most Venomous Serpents Worldwide | Learn About Dangerous Reptiles


Top 10 Deadliest Snakes: Unveiling the Most Venomous Serpents Worldwide | Learn About Dangerous Reptiles

Snakes are one of the most terrifying creatures in the animal world. A single thought of a snake can shiver you on both sides. Even thinking about their slither, hiss and bite we literally get goosebumps from top to bottom. Snakes hunt their prey majorly using two techniques on which they are of two types; Constrictor and Venomous.  According to the World Health Organisation snake bite is one of the major causes of human death caused by animals and it is a neglected public health issue. Poisonous snakes bite around 5.4 million people every year and around 81,000 to 1,38,000 people die every year as a result. Here in this article, you are going to meet with some deadliest poisonous snakes around the globe.


Common Name Habitat Length Geographic Range Venom Type Danger to Humans
Saw-scaled Viper Dry, rocky, and sandy regions Typically 1 to 3 feet Parts of Africa, the Middle East, and Asia Hemotoxin High – Potentially fatal
Inland Taipan Semi-arid and arid regions, grasslands Typically 6.6 to 8.2 feet Central-eastern Australia Neurotoxin Extremely High
Black Mamba Savannah, woodlands, dense forests Typically 8 to 10 feet Sub-Saharan Africa Neurotoxic (with cytotoxic) Extremely High
Russell’s Viper Grasslands, shrublands, forests Typically 3 to 5 feet South Asia and Southeast Asia Hemotoxic (with cytotoxic) Potentially fatal
Common Krait Agricultural areas, grasslands 3 to 4 feet South Asia Neurotoxic Highly dangerous
Indian Cobra Agricultural areas, grasslands 4 to 6 feet Indian subcontinent Neurotoxic Highly dangerous
Puff Adder Savannah, grasslands, scrublands 2 to 4 feet Sub-Saharan Africa Cytotoxic Highly dangerous
Common Death Adder Woodlands, forests, grasslands 1 to 3 feet Australia and nearby islands Neurotoxic Highly dangerous
King Cobra Tropical rainforests, dense woodlands 10 to 13 feet South and Southeast Asia Neurotoxic Extremely High
Eastern Diamondback Rattlesnake Arid and semi-arid regions, deserts 3 to 5 feet North and Central America Hemotoxic High



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1. Saw-scaled Viper – Echis carinatus

Saw-scaled Viper - Echis carinatus

Common Name – Carpet Viper

Habitat – Dry, rocky, and sandy regions

Geographic Range -Found in parts of Africa, the Middle East, and Asia

Length -Typically 1 to 3 feet (30 to 90 cm)

Danger to Humans High – Can deliver a potentially fatal bite

Venom Type – Hemotoxin

The most poisonous snakes do not come without warning, they display a unique kind of threat display with making sizzling sounds while rubbing their bodies. It is also called Echis which is a Latin word derived from a Greek word, literally means viper. Its biological name is Echis carinatus. This species belongs to a genus of viper snake. It is found mainly in desert areas of Sri Lanka, India, Pakistan, the Middle East and Africa. This snake species causes the most number of bites and deaths of humans around the world. 



2. Inland Taipan – Oxyuranus microlepidotus

Inland Taipan - Oxyuranus microlepidotus

Common Name – Small-scaled snake

Geographic Range – Central-eastern Australia

Habitat – Semi-arid and arid regions, typically grasslands, shrublands, and open woodlands

Length – Typically 6.6 to 8.2 feet (2 to 2.5 meters)

Venom Type – Neurotoxin

Danger to Humans – Extremely High – Considered the most venomous snake in the world 

Inland taipan is one of the most venomous snakes in the world and belongs to the snake family Elapidae. It is also called western taipan, small-scaled taipan or fierce snake commonly. This snake is native to semiarid areas of central east Australia. It is famous among Indigenous Australian people with the name Dandarabilla. The neurotoxin produced by modified salivary glands is the most lethal poison on the planet which is majorly adapted to kill warm-blooded animals like mice. 



3. Black Mamba – Dendroaspis polylepis

Black Mamba - Dendroaspis polylepis

Common Name – Black Mamba

Habitat – Savannah, woodlands, dense forests and rocky slopes

Length – Typically 8 to 10 feet (2.5 to 3 meters), but can grow up to 14 feet (4.3 meters)

Geographic Range – Sub-Saharan Africa, including countries like South Africa, Mozambique, Zimbabwe, and others

Venom Type – Neurotoxic (with some cytotoxic components)

Danger to Humans – Extremely High – One of the deadliest snakes in the world due to potent venom and aggressive behaviour

The black Mamba is a highly venomous snake species which is native to regions of sub-Saharan Africa. Black Mamba belongs to the genus Dendroaspis of the snake family Elapidae. It is the second-longest poisonous snake after the King Cobra. It is aggressive, quick and famous for its speedy attacks. The colour of its varies from grey to shades of brown. They can live in multiple habitats like savannah, woodlands, dense forests and rocky slopes. They are both arboreal meaning tree-living and terrestrial meaning ground-living snakes. 



4. Russel’s Viper – Daboia russelii

Russel’s Viper - Daboia russelii

Common Name – Scissors Snake or Chain Viper

Habitat –  Grasslands, shrublands, agricultural areas, and forests in South Asia and Southeast Asia

Length – Typically 3 to 5 feet (0.9 to 1.5 meters), but can grow up to 6 feet (1.8 meters)

Geographic Range – Found in South Asia (including India, Sri Lanka, Bangladesh, and Pakistan) and Southeast Asia (including Myanmar, Thailand, Cambodia, Vietnam, and parts of China)

Venom Type – Hemotoxic, with some cytotoxic effects

Danger to Humans – Potentially fatal venom

Russell’s Viper belongs to the snake family Viperidae. It is among the Big Four snakes in India. It was named Russell’s Viper after the famous Scottish surgeon and naturalist Patcik Russell. He wrote ‘An account of Indian serpents, collected on the coast of Coromandel’ in 1796. HE described Russel’s viper in detail in his work. It is native to the countries like India, Sri Lanka, Bangladesh, Nepal, and Pakistan. It is responsible for around 43 per cent of snakebites in India.



5. Common Krait – Bungarus caeruleus

Common Krait - Bungarus caeruleus

Common Name – Bengal krait

Habitat – Agricultural areas, grasslands, scrublands, and often found near human habitation in South Asia

Length – 3 to 4 feet (0.9 to 1.2 meters)

Geographic Range – South Asia, including India, Pakistan, Nepal, Bangladesh, and Sri Lanka

Venom Type – Neurotoxic, with neurotoxins that affect the nervous system

Danger to Humans – venom is potentially lethal, making it one of the deadliest snakes

Listed among the Big Four, the Common Krait is also known as the Bengal Krait. It belongs to the family Elapidae. This species is native to the Indian subcontinent and mainly distributed in entire North and South India, from Sindh to West Bengal and Sri Lanka. It is a nocturnal animal which remains sluggish in daylight. It causes the highest number of snakebites in India. They produce neurotoxin which paralyses muscles. They mainly eat other snakes, including cannibalise other kraits. They also eat rats, mice, frogs and lizards.



6. Indian Cobra – Naja naja

Common Name – Spectacled cobra

Habitat –  Indian Cobras inhabit a variety of habitats including agricultural areas, grasslands, scrublands, forests, and even urban areas throughout the Indian subcontinent.

Length – 4 to 6 feet (1.2 to 1.8 meters) 

Geographic Range – Indian Cobras are found primarily in the Indian subcontinent, including India, Pakistan, Bangladesh, Sri Lanka, and parts of Nepal and Bhutan.

Venom Type –  neurotoxic venom

Danger to Humans –  highly dangerous

The Indian Cobra or Naja naja is a real cobra. It is also known as spectacled cobra, binucleate cobra or Asian cobra. It is one of the Big Four that causes the most number of snakebites in India. It belongs to the Elapidae family. It looks like a king cobra but has many distinctive features. Many snake charmers keep them and perform with them. It is connected with the many stories of Hindu mythology. Indian Wildlife Protection Act lists this species of snake as a protected species.  



7. Puff Adder – Bitis arietans

Common Name – Common puff adder

Habitat – savannah, grasslands, scrublands, rocky areas, and sometimes forested regions in sub-Saharan Africa.

Length –  2 to 4 feet (60 to 120 cm) 

Geographic Range – sub-Saharan Africa, including countries such as South Africa, Zimbabwe, Kenya, Nigeria, and Cameroon.

Venom Type – cytotoxic venom

Danger to Humans – highly dangerous

Puff Adder is a species of Viper and it is The main cause of the highest number of deaths due to snakebite in Africa. They do not attack humans without a clear warning. They Inflate their bodies and hiss loudly to warn people to stay away. They are mainly found in grassland and Savannah of Morocco, western Arabia and throughout Africa leaving Sahara and rainforest areas. Their venom is highly cytotoxic which destroys cells. Symptoms of their bite include edema, nausea, vomiting, blood blisters, painful swelling, dizziness and unconsciousness. 



8. Common Death Adder – Acanthophis antarcticus

Common Name – death adders

Habitat – woodlands, forests, grasslands, and heathlands, across Australia and nearby islands.

Length –  1 to 3 feet (30 to 90 cm)

Geographic Range – Australia, Tasmania and nearby islands.

Venom Type – potent neurotoxic venom

Danger to Humans – highly dangerous

The Common Death Adder is one of the most venomous snakes. Its botanical name is Acanthophis antarcticus. It is one of the most poisonous snakes in Australia. It is not a very aggressive snake and uses camouflage to hide and hunt using ambush. They hide in the grass using camouflage. Its population is decreasing due to invasive cane toads. These toads eat their young death adders decreasing their population significantly. Also when adult death adder eat these toads they die too because of the poison present on the skin of toads. 



9. King cobra – Ophiophagus hannah

Common Name – Hamadryad

Habitat – Tropical rainforests, dense woodlands, and sometimes near bodies of water in South and Southeast Asia

Length – 10 to 13 feet (3 to 4 meters), can grow up to 18 feet (5.5 meters) and more

Geographic Range – Found in South and Southeast Asia, including India, Bangladesh, Sri Lanka, Myanmar, Thailand, Malaysia, Indonesia, and the Philippines

Venom Type – Neurotoxic, with a potent venom that affects the nervous system

Danger to Humans – Extremely High – not as aggressive as other venomous snakes

King Cobra is among the top ten most poisonous snakes in this world. It is an endemic species of Asia. It is the only member of the Ophiophagus genus. It is not a true cobra however it looks similar to one. Its average length is 3.1824 metres and it can grow up to 6 metres. It is among the world’s longest venomous snakes. It is distributed in areas of the Indian subcontinent south Eastern Asia and Southern China. It displaces threats using techniques like spreading neck-flap, making eye contact, hissing, charging and raising the head upright.



10. Eastern Diamondback Rattlesnake – Crotalus adamanteus

Common Name – species of pit viper

Habitat –  Arid and semi-arid regions, including deserts, grasslands, scrublands, and rocky hillsides in North and Central America

Length –  3 to 5 feet (0.9 to 1.5 meters)

Geographic Range – Found primarily in North America, including the southwestern United States (such as Arizona, New Mexico, and Texas) and northern Mexico

Venom Type – Hemotoxic, with venom that affects blood coagulation and tissue damage

Danger to Humans – High 

The eastern diamond bag battle snake is the deadliest in the entire North America. It belongs to the Viperidae family and it is a pit viper species. It is majorly found in the SouthEastern United States. It is a comparatively large and fat snake weighing up to 15.4 kilograms. It displays thread using its fangs which are one inch long. Rattlesnakes have rings on the end of their tails and to display threat hold their tails vertically upward and begin to rattle it. Its venom is hemotoxic which kills red blood cells and damages body tissues. That’s why the mortality rate due to its bite is 20%. 

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