List of dangerous snakes is an overview of the snakes that pose a significant health risk to humans. The varieties of snake that most often cause serious snakebites depends on the region of the world. Several species of snakes may cause more bodily destruction than others, any of these venomous snakes are still very capable of causing human fatality should a bite go untreated.


The Forest cobra is the largest true cobra of the genus Naja and is a very bad-tempered, aggressive, and irritable snake.  The forest cobra is one of the least frequent causes of snake bite among the African cobras, this is largely due to its forest-dwelling habits. It is the largest of the Naja cobras and the venom is considered highly toxic. If the snake becomes cornered or is agitated, it can quickly attack the aggressor, and if a large amount of venom is injected, a rapidly fatal outcome is possible. these cobra’s are in the list of most dangerous snakes.


Tiger snakes are highly venomous and dangerous snakes in the world. Their venoms possess  potent neurotoxins, coagulants, haemolysins and myotoxins and the venom is quick-acting with rapid onset of breathing difficulties and paralysis. The untreated mortality rate from tiger snake bites is reported to be between 40 and 60%. They are a major cause of snakebites and occasional snakebite deaths in Australia.


The common krait is often considered to be the most dangerous snakes species in India. Its venom consists mostly of powerful neurotoxins which induce muscle paralysis. Clinically, its venom contains presynaptic and postsynaptic neurotoxins, which generally affect the nerve endings near the synaptic cleft of the brain. This species causes an estimated 10,000 fatalities per year in India alone. There is a 70-80% mortality rate in cases where there is no possible or poor and ineffective treatment


Green mambas are all highly venomous and dangerous snakes that can be highly aggressive and unpredictable in disposition. They can suddenly go from a state of relative calm to an extremely agitated and dangerous state. All three species have a tendency to strike repeatedly with little provocation, although they are generally much less aggressive than their larger cousin, the Black mamba. All three species of green mamba are highly arboreal, alert, extremely quick, and agile. The Western green mamba is highly venomous and aggressive with a LD50 of 0.7 mg/kg SC and the average venom yield per bite is approximately 100 mg. The mortality rate of untreated bites is unknown but is thought to be very high (>80%).


The Indian cobra is a moderately venomous species, but has a rapid-acting venom. In mice, the SC LD50 for this species is 0.80 mg/kg and the average venom yield per bite is between 169 and 250 mg. Though it is responsible for many bites, only a small percentage are fatal if proper medical treatment and antivenom are given. The mortality rate for untreated bite victims can vary from case to case, depending upon the quantity of venom delivered by the individual involved. According to one study, it is approximately 15–20%. But in another study, with 1,224 bite cases, the mortality rate was only 6.5%. Estimated fatalities as a result of this species is approximately 15,000 per year, but they are responsible for an estimated 100,000-150,000 non-fatal bites per year.


Russell’s viper  produces one of the most excruciatingly painful bites of all venomous snakes. Internal bleeding is common. Bruising, blistering and necrosis may appear relatively quickly as well. The Russell’s viper is irritable, short-tempered and a very aggressive snake by nature and when irritated, coils tightly, hisses, and strikes with lightning speed. This species is responsible for more human fatalities in India than any other snake species, causing an estimated 25,000 fatalities annually. The LD50 in mice, which is used as a possible indicator of snake venom toxicity, is as follows: 0.133 mg/kg intravenous, 0.40 mg/kg intraperitoneal, and about 0.75 mg/kg subcutaneous. For most humans, a lethal dose is approximately 40–70 mg. However, the quantity of venom produced by individual specimens is considerable. Reported venom yields for adult specimens range from 130–250 mg to 150–250 mg to 21–268 mg. this is the most dangerous snake in all kind of snakes.


The King cobra is the longest venomous snake in the world. It can inject very high volumes of venom in a single bite. It is also called snake eater. The venom LD50 is 1.80 mg/kg SC according to Broad et al. (1979). The mean value of subcutaneous LD50 of five wild-caught king cobras in Southeast Asia was determined as 1.93 mg/kg. The maximum venom yield is approximately 1000 mg (dry weight). The king cobra has a fearsome reputation. When annoyed, it spreads a narrow hood and growls loudly, but some scientists claim that their aggressiveness is grossly exaggerated. If the snake were really habitually aggressive records of its bite would be frequent; as it is they are extremely rare.”


The Inland taipan  is considered the most venomous snake and dangerous snakes in the world.They have an average venom yield of 44 mg. Bites from this species have a mortality rate of 80% if left untreated, although it is very rare for this species to bite. This species is known to be a very shy, reclusive and a laid-back snake that will nearly always slither away from disturbance. It is not an aggressive species and rarely strikes.




The Coastal taipan is a large, highly venomous Australian elapid . This is one of the dangerous snake of the world. It has one subspecies, the Papuan taipan (Oxyuranus scutellatus canni). This snake can be highly aggressive when cornered and will actively defend itself. This snake is considered to be one of the most venomous in the world. Based on the study by Ernst and Zug et al. 1996, which listed the LD50 of the coastal taipan at 0.106 mg SC and a venom yield of 400 mg, this would be sufficient enough to kill 59 adult humans in a single bite.



The African Black mamba  is a large and highly venomous snake species native to much of Sub-Saharan Africa. It is the second longest venomous snake species in the world and is the fastest moving land snake. It is the most feared and most dangerous snake species in Africa and territorial snake. When cornered or threatened, the black mamba can put up a fearsome display of defense and aggression.  When warding off a threat, the black mamba delivers multiple strikes, injecting large amounts of  venom with each strike. Their strikes are very quick and extremely accurate and effective. If the attempt to scare away the threat fails, it will strike repeatedly. The probability of dry bites (no venom injected) in black mamba strikes is almost non-existent.


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