Top 10 Most VenomousSnakes across the World

The deadliest snakes of the planet!

Every year somewhere between 20,000 and 125,000 people die from snake bites. This makes them by far the most dangerous group of vertebrates on Earth. Today we're going to uncover Top 10 Most Venomous/Deadliest Snakes list across the World:

1. Belcher’s Sea Snake

belcher-sea-snake-worlds-mosst-venomous-snake Image source: Google, see: Content Credit

The most venomous snake known in the world, a few milligrams is strong enough to kill 1000 people! Less than 1/4 of bites will contain venom, and they are relatively docile. Fisherman are usually the victims of these bites, as they encounter the species when they pull nets from the ocean. Found throughout waters off South East Asia and Northern Australia.

2. Fierce Snake or Inland Taipan

fierce-snake-or-inland-taipan Image source: Google, see: Content Credit

While I did say that I would not include multiple sub-species in this list, the incredible Inland Taipan deserves a spot of its own. It has the most toxic venom of any land snake in the world. The maximum yield recorded for one bite is 110mg, enough to kill about 100 humans, or 250,000 mice! With an LD/50 of 0.03mg/kg, it is 10 times as venomous as the Mojave Rattlesnake, and 50 times more than the common Cobra. Fortunately, the Inland Taipan is not particularly aggressive and is rarely encountered by humans in the wild. No fatalities have ever been recorded, though it could potentially kill an adult human within 45 minutes.

3. Blue Krait

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The Malayan or Blue Krait is, by far, the most deadly of this species. Found throughout South East Asia and Indonesia, 50% of bites from the deadly Blue Krait are fatal, even with the administration of antivenin. Kraits hunt and kill other snakes, even cannibalizing other Kraits. They are a nocturnal breed, and are more aggressive under the cover of darkness. However, overall they are quite timid and will often attempt to hide rather than fight. The venom is a neurotoxin, 16 times more potent than that of a Cobra. It quickly induces muscle paralysis by preventing the ability of nerve endings to properly release the chemical that sends the message to the next nerve. This is followed by a period of massive over excitation (cramps, tremors, spasms), which finally tails off to paralysis. Fortunately, bites from Kraits are rare due to their nocturnal nature. Before the development of antivenin, the fatality rate was a whopping 85%. Even if antivenin is administered in time, you are far from assured survival. Death usually occurs within 6-12 hours of a Krait bite. Even if patients make it to a hospital, permanent coma and even brain death from hypoxia may occur, given potentially long transport times to get medical care.

4. Taipan

taipan Image source: Google, see: Content Credit

Another entry from Australia, the venom in a Taipan is strong enough to kill up to 12,000 guinea pigs. The venom clots the victim’s blood, blocking arteries or veins. It is also highly neurotoxic. Before the advent of an antivenin, there are no known survivors of a Taipan bite, and death typically occurs within an hour. Even with successful administration of antivenin, most victims will have an extensive stay in intensive care. It has been likened to the African Black Mamba in morphology, ecology and behavior.

5. Black Mamba

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The feared Black Mamba is found throughout many parts of the African continent. They are known to be highly aggressive, and strike with deadly precision. They are also the fastest land snake in the world, capable of reaching speeds of up to 20km/h. These fearsome snakes can strike up to 12 times in a row. A single bite is capable of killing anywhere from 10-25 adults. The venom is a fast acting neurotoxin. Its bite delivers about 100–120 mg of venom, on average; however, it can deliver up to 400 mg. If the venom reaches a vein, 0.25 mg/kg is sufficient to kill a human in 50% of cases. The initial symptom of the bite is local pain in the bite area, although not as severe as snakes with hemotoxins. The victim then experiences a tingling sensation in the mouth and extremities, double vision, tunnel vision, severe confusion, fever, excessive salivation (including foaming of the mouth and nose) and pronounced ataxia (lack of muscle control). If the victim does not receive medical attention, symptoms rapidly progress to severe abdominal pain, nausea and vomiting, pallor, shock, nephrotoxicity, cardio toxicity and paralysis. Eventually, the victim experiences convulsions, respiratory arrest, coma and then death. Without antivenin, the mortality rate is nearly 100%, among the highest of all venomous snakes. Depending on the nature of the bite, death can result at any time between 15 minutes and 3 hours.

6. Tiger Snake

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Found in Australia, the Tiger snake has a very potent neurotoxic venom. Death from a bite can occur within 30 minutes, but usually takes 6-24 hours. Prior to the development of antivenin, the fatality rate from Tiger snakes was 60-70%. Symptoms can include localized pain in the foot and neck region, tingling, numbness and sweating, followed by a fairly rapid onset of breathing difficulties and paralysis. The Tiger snake will generally flee if encountered, but can become aggressive when cornered. It strikes with unerring accuracy.

7. Philippine Cobra

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Most species of Cobra would not make this list; however the Philippine Cobra is the exception. Drop for drop, its venom is the most deadly of all the Cobra species, and they are capable of spitting it up to 3 metres. The venom is a neurotoxin which affects cardiac and respiratory function, and can cause neurotoxicity, respiratory paralysis and death in thirty minutes. The bite causes only minimal tissue damage. The neurotoxins interrupt the transmission of nerve signals by binding to the neuro-muscular junctions near the muscles. The symptoms might include headache, nausea, vomiting, abdominal pain, diarrhea, dizziness, collapse and convulsions.

8. Vipers

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Vipers are found throughout most of the world, but arguably the most venomous is the Saw Scaled Viper and the Chain Viper, found primarily in the Middle East and Central Asia, particularly India, China and South East Asia. Vipers are quick tempered and generally nocturnal, often active after rains. They are also very fast. Most of these species have venom that cause symptoms that begin with pain at the site of the bite, immediately followed by swelling of the affected extremity. Bleeding is a common symptom, especially from the gums. There is a drop in blood pressure and the heart rate falls. Blistering occurs at the site of the bite, developing along the affected limb in severe cases. Necrosis is usually superficial and limited to the muscles near the bite, but may be severe in extreme cases. Vomiting and facial swelling occurs in about one-third of all cases. Severe pain may last for 2-4 weeks. Often, local swelling peaks within 48-72 hours, involving the affected limb. Discoloration may occur throughout the swollen area as red blood cells and plasma leak into muscle tissue. Death from septicaemia, respiratory or cardiac failure may occur 1 to 14 days post-bite, or even later.

9. Death Adder

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The appropriately named Death Adder is found in Australia and New Guinea. They actually hunt and kill other snakes, including some on this list, usually via ambush. Death Adders look quite similar to vipers, in that they have triangular shaped heads and short, squat bodies. They typically inject around 40-100mg of venom with an LD of 0.4mg-0.5mg/kg. An untreated Death Adder bite is one of the most dangerous in the world. The venom is a neurotoxin. A bite causes paralysis and can cause death within 6 hours, due to respiratory failure. Symptoms generally peak within 24-48 hours. Antivenin is very successful in treating a bite from a Death Adder, particularly due to the relatively slow progression of symptoms, but before its development, a Death Adder bite had a fatality rate of 50%. With the quickest strike in the world, a Death Adder can go from strike position to striking and back again within 0.13 of a second.

10. Rattlesnake

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The only snake from the Americas on the list, the Rattlesnake is easily identifiable by the tell tale rattle on the end of its tail. They are actually a part of the Pit Viper family, and are capable of striking at up to 2/3rd their body length. The Eastern Diamondback in considered the most venomous species in North America. Surprisingly, juveniles are considered more dangerous than adults, due to their inability to control the amount of venom injected. Most species of rattlesnakes have hemotoxic venom, destroying tissue, degenerating organs and causing coagulopathy (disrupted blood clotting). Some degree of permanent scarring is very likely in the event of a venomous bite, even with prompt, effective treatment, and can lead to the loss of a limb or death. Difficulty breathing, paralysis, drooling and massive hemorrhaging are also common symptoms. Thus, a rattlesnake bite is always a potentially fatal injury. Untreated rattlesnake bites, especially from larger species, are very often fatal. However, antivenin, when applied in time, reduces the death rate to less than 4%.

Though mostly feared, snakes are an important part of our nation’s biodiversity and mostly inhabit the areas like forests and jungles. Most of the snake species are non-venomous but still they are considered dangerous which is alright since people are not so much aware about these things, since snakes are true friend of nture we must get aware that how they are important to maintain the balance of our biodiversity system. For this it is important to know the common non-venomous snakes which are not harmful for human but due to lack of knowledge they are being killed by their appearance only. Besides any animal will get aggressive when aggravated so this is a defense mechanism used by all the inhabitants of the planet. Mostly snakes will only attack once they feel threatened otherwise these reptiles generally prefer to stay away from human touch. Please try to keep away from each others to save these wonderful creatures of nature.

Snakebite Treatment (First Aid)

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It’s important to be aware that bites from snakes can cause a severe allergic reaction in some people. Learn more about first aid treatment for severe allergic reactions in the section below.

Note the Snake's Appearance

It can be difficult to know if a bite from a snake is dangerous or not. This article explains the best first aid treatment depending on the type of snake involved. It's not recommended to kill the snake for purposes of identification, because medical services do not rely on visual identification of the snake species. There are few parameters by which you can differentiate between venomous and non-venomous snakes.

Snake bites

In between 20,000 and 125,000 people die from snake bites every year, It has been estimated that 7,000–8,000 people per year receive venomous bites in the United States, and about 5 of those people die. The number of deaths would be much higher if people did not seek medical care. As many as 300 people are bitten by snakes in Australia each year, but there are few associated deaths. Eighteen people have died from snake bites in the country since 2011. Roughly 46,000 people die of snakebites in India every year, according to the American Society of Tropical Medicine and Hygiene, accounting for nearly half of the 100,000 annual snakebite deaths the world over.

Most snake bites happen when people try to kill or capture them. If you come across a snake, don't panic. Back away to a safe distance and let it move away. Snakes often want to escape when disturbed.

All snake bites must be treated as potentially life-threatening. If you are bitten by a snake, call 102 for an ambulance or reach nearest hospital at the earliest.

Different types of snake bites

Dry bites

A dry bite is when the snake strikes but no venom is released. Dry bites will be painful and may cause swelling and redness around the area of the snake bite.

Because you can’t tell if a snake’s bite is a dry bite always assume that you have been injected with venom, and manage the bite as a medical emergency. Once medically assessed, there is usually no need for further treatment, such as with antivenoms. Many snake bites do not result in envenomation, and so they can be managed without antivenom.

Venomous bites

Venomous bites are when the snake bites and releases venom (poison) into a wound. Snake venom contains poisons which are designed to stun, numb, or kill other animals.

Symptoms of a venomous bite include:

  1. severe pain around the bite, this might come on later
  2. swelling, bruising or bleeding from the bite
  3. bite marks on the skin (these might be obvious puncture wounds or almost invisible small scratches)
  4. swollen and tender glands in the armpit or groin of the limb that has been bitten
  5. tingling, stinging, burning or abnormal feelings of the skin
  6. feeling anxious
  7. nausea (feeling sick) or  vomiting (being sick)
  8. dizziness
  9. blurred vision
  10. headache
  11. breathing difficulties
  12. problems swallowing
  13. stomach pain
  14. irregular heartbeat
  15. muscle weakness
  16. confusion
  17. blood oozing from the site or gums
  18. collapse
  19. paralysis, coma or death (in the most severe cases)

Recommended

  1. Move the person beyond striking distance of the snake.
  2. Have the person lie down with wound below the heart.
  3. Keep the person calm and at rest, remaining as still as possible to keep venom from spreading.
  4. Cover the wound with loose, sterile bandage.
  5. Remove any jewelry from the area that was bitten.
  6. Remove shoes if the leg or foot was bitten.

Never

  1. Cut a bite wound
  2. Attempt to suck out venom
  3. Apply tourniquet, ice, or water
  4. Give the person alcohol or caffeinated drinks or any other medications

Please note that above mentioned aid is a standard protocol to be used in a general condition. Do consult a doctor or medical specialist for proper treatment. Since snake bite may cause death of a human, so we will not gurantee that above procedure will work in every condition as the medical condition vary person to person, however these are widely used first ad globally but we will advice you to consult a doctor before follow these steps.

Reference: Health Direct, WebMD

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Milan Anshuman is a travel blogger at Roadway Star. He is passionate about travelling across entire India, specially in undiscovered places, apart from travelling he loves to shoot nature and wildlife beauties, waterfall, mountain series and beaches.

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