Title: List of dangerous snakes
Content:  The King cobra (Ophiophagus hannah) is the longest venomous snake in the world, and it can inject very high volumes of venom in a single bite. The venom is 1.80 mg/kg SC according to Broad et al. (1979). The mean value of subcutaneous of five wild-caught king cobras in Southeast Asia was determined as 1.93 mg/kg. Between 350 and 500 mg (dry weight) of venom can be injected at once (Minton, 1974). In another study by (Broad et al., 1979), the average venom quantity was 421 mg (dry weight of milked venom). 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. In most of the local encounters with live, wild king cobras, the snakes appear to 
Title: King cobra
Content:  The king cobra's venom consists of cytotoxins and neurotoxins, including alpha-neurotoxins and three-finger toxins. Other components have cardiotoxic effects. Its venom is produced in anatomical glands named postorbital venom glands. It can deliver up to 420 mg venom in dry weight (400–600 mg overall) per bite, with a toxicity in mice of 1.28 mg/kg through intravenous injection, 1.5 to 1.7 mg/kg through subcutaneous injection, and 1.644 mg/kg through intraperitoneal injection. For research purposes, up to 1 g of venom was obtained through milking. The toxins affect the victim's central nervous system, resulting in severe pain, blurred vision, vertigo, drowsiness, and eventually paralysis. If the envenomation is serious, it progresses to cardiovascular collapse, and the victim falls into a 
Title: King brown snake
Content:  the amounts produced by the king cobra (Ophiophagus hannah) and gaboon viper (Bitis gabonica). In a laboratory experiment on mice, not only did the king brown snake inject far more venom than other species of dangerous snake, very little of its venom (0.07mg of 62mg) was left on the skin. When using 0.1% bovine serum albumin in saline rather than saline alone, the venom has a murine median lethal dose of 1.91mg/kg (0.866mg/lb) when administered subcutaneously. The main toxic agents of king brown snake venom are myotoxins hazardous to striated muscles and kidney cells. Toxic effects are proportional to the amount of venom in the victim. Nonspecific symptoms of poisoning are 
Title: King cobra
Content:  short, fixed fangs in the front of the mouth, which channel venom into the prey. These are behind the usual "nine-plate" arrangement typical of colubrids and elapids, and are unique to the king cobra. The king cobra typically weighs about 6 kg. A captive one at the London Zoo grew to 5.71 m before being euthanised upon the outbreak of World War II. The heaviest wild specimen was caught at Royal Island Club in Singapore in 1951, which weighed 12 kg and measured 4.8 m. An individual kept at Bronx Zoo weighed 12.7 kg and was 4.4 m long in 1972.
Title: King cobra
Content:  The king cobra is not considered aggressive. It usually avoids humans and slinks off when disturbed, but is known to aggressively defend incubating eggs and attack intruders rapidly. When alarmed, it raises the front part of its body, extends the hood, shows the fangs and hisses loudly. Wild king cobras encountered in Singapore appeared to be placid, but reared up and struck in self defense when cornered. The king cobra possesses a potent neurotoxic venom and death can occur in as little as 30 minutes after being bitten. Most victims bitten by king cobras are snake charmers. Hospital records in Thailand indicate that bites from king cobras are very uncommon. The king cobra can be easily irritated by closely approaching objects or sudden movements. When raising its body, the king cobra can still move forward to strike with a long distance, and people may misjudge the safe zone. It can deliver multiple bites in a single attack.
Title: King cobra
Content:  in Kerala measured up to 3.75 m and weighed up to 10 kg. Females captured had a maximum length of 2.75 m and a weight of 5 kg. The largest known king cobra was 18 ft long and captured in Thailand. It differs from other cobra species by size and hood. It is larger, has a narrower and longer stripe on the neck. The head of a mature snake can be quite massive and bulky in appearance. Like most extant snakes, due to macrostomy, it can expand its jaws to swallow large prey items. It has proteroglyph dentition, meaning it has 
Title: Cape cobra
Content:  The Cape cobra is regarded as one of the most dangerous species of cobra in all of Africa, by virtue of its potent venom and frequent occurrence around houses. The venom of this snake tends to be thick and syrupy in consistency and dries into shiny pale flakes, not unlike yellow sugar. The Cape cobra's venom is made up of potent postsynaptic neurotoxins and might also contain cardiotoxins, that affect the respiratory system, nervous system, and the heart. The mouse SC for this species' venom ranges from 0.4 mg / kg to  0.72, while the IV and IP  values are 0.4 mg/kg and 0.6 mg/kg, respectively. The average venom yield per bite is 100 to 150 mg according to Minton. The mortality 
Title: King cobra
Content:  The king cobra (Ophiophagus hannah) is a venomous snake species of elapids endemic to jungles in Southern and Southeast Asia. The sole member of the genus Ophiophagus, it is distinguishable from other cobras, most noticeably by its size and neck patterns. The king cobra is the world's longest venomous snake, with an average length of 3.18 to 4 m, reaching a maximum of 5.85 m. Its skin colour varies across the habitats, from black with white stripes to unbroken brownish grey. It preys chiefly on other snakes, including its own species. Unlike other snakes, it rarely hunts non-reptile vertebrates, such as rodents and lizards. Like most cobras and mambas, the 
Title: Forest cobra
Content:  The venom of this cobra is a postsynaptic neurotoxin and bites result in severe neurotoxicity. Ernst and Zug et al. 1996 list a value of 0.225 mg/kg SC. According to Brown and Fry of the Australian Venom and Toxin Database, the murine intraperitoneal value is 0.324 mg/kg. The average venom yield per bite is 571 mg and the maximum venom yield is 1102 mg. This snake can be highly dangerous due to the quantity of venom it can inject in a single bite and its aggressive nature when defending. Death can occur rapidly, within 30 to 120 minutes in severe cases of envenomation. Signs and symptoms of envenomation include ptosis, drowsiness, limb paralysis, hearing loss, inability to speak, dizziness, ataxia, shock, hypotension, abdominal pain, fever, pallor, and other 
Title: King brown snake
Content:  amputation of the envenomed limb. He reported later that he had impulsively decided to commit suicide by placing his hand in a bag with a king brown snake inside and stirring it up. A large king brown snake delivers on average 180mg of venom in one bite. A 2.5 m long king brown snake milked by snake handler John Cann produced 1350mg, and then 580, 920, and 780mg at three, four, and five months after the first milking. This record was broken in 2016, when a king brown snake called "chewi"—also 2.5 m long—produced 1500mg of venom at the Australian Reptile Park. The volume of venom produced in laboratories is equivalent 

Question: how much venom can a king cobra produce?
Answer: 420 mg.
up to 7 ml.
200 to 500 mg.