The inland taipan (Oxyuranus microlepidotus) is considered the most venomous snake in the world with a murine LD 50 value of 0.025 mg/kg SC.
The black mamba, for example, injects up to 12 times the lethal dose for humans in each bite and may bite as many as 12 times in a single attack. This mamba has the fastest-acting venom of any snake, but humans are much larger than its usual prey so it still takes 20 minutes for you to die.
The saw-scaled viper, Echis carinatus, is considered the deadliest snake in the world, according to Britannica. This type of snake is said to be responsible for "more human deaths than all other snake species combined." The venom of the saw-scaled viper is not as lethal as other snakes, but it is far more aggressive.
Introducing the most venomous snake in the world and epic predator of the Australian outback! The inland taipan is otherwise known as the fierce snake or small scaled snake.
Twenty minutes after being bitten you may be lose the ability to talk. After one hour you're probably comatose, and by six hours, without an antidote, you are dead. A person will experience "pain, paralysis and then death within six hours," says Damaris Rotich, the curator for the snake park in Nairobi.
The blue-ringed octopodes (Hapalochlaena spp.) produce tetrodotoxin, which is extremely toxic to even the healthiest adult humans, though the number of actual fatalities they have caused is far lower than the number caused by spiders and snakes, with which human contact is more common.
A new study suggests that king snakes are, pound for pound, the strongest constrictors in the world.
The Eastern brown snake (Pseudonaja textilis) has a venom LD 50 value of 0.053 mg SC (Brown, 1973) and a value of 0.0365 mg SC (Ernst and Zug et al. 1996). According to both studies, it is the second most venomous snake in the world.
The king cobra, which does prey on cobras, is said to be immune to their venom.
An unlikely tale, perhaps—yet Ireland is unusual for its absence of native snakes. It's one of only a handful of places worldwide—including New Zealand, Iceland, Greenland, and Antarctica—where Indiana Jones and other snake-averse humans can visit without fear.
It is no doubt that king cobras do occasionally consume large prey such as monitor lizards or even pythons. One cannot but wonder how the snake is able to make dynamic decisions and evaluate the risks and gains of pursuing prey such as a rock python, which can potentially kill the cobra by constricting it.
A king cobra would win a fight against a taipan. The taipan has much deadlier venom, but that's not going to save it against the great amount of experience that king cobras have in attacking snakes. Neither snake lives in the same area of the world and they're from different families.
AUSTRALIA IS INFAMOUS FOR its dangerous animals. With more deadly snakes than any other country worldwide, it isn't surprising.
King snakes are native to North America and have evolved into the strongest constrictors in the world, with the ability to exert 180 mm Hg of pressure. That's about 60 mm Hg higher than the healthy blood pressure of a human being.
Except no one told the kingsnake. Kingsnakes squeeze their prey to death, are immune to rattlesnake venom and are so named for their astonishing ability to overpower and eat snakes that are much larger than they are.
Their most remarkable type of prey, however, is other snakes! California Kingsnakes are “kings” because they hunt and devour various snake species, including other kingsnakes and even rattlesnakes – they are immune to rattlesnake venom!
Australian Box Jellyfish
The box jellyfish is the world's most venomous animal with four species — Chironex fleckeri, Carukia barnesi, Malo kingi, and Chironex yamaguchii — considered highly venomous. The Chironex fleckeri, also known as the Australian box jellyfish is considered the most venomous animal in the world.
1. Botulinum toxin. Scientists differ about the relative toxicities of substances, but they seem to agree that botulinum toxin, produced by anaerobic bacteria, is the most toxic substance known. Its LD50 is tiny – at most 1 nanogram per kilogram can kill a human.
Blue-ringed octopus
Although it's relatively small -- only the size of a golf ball -- its venom is debilitating and deadly. It can cause respiratory failure within 10 minutes and death within 30. One bite can kill up to 26 men, and there is no antidote.
The killer of the most people
The saw-scaled viper (Echis carinatus) may be the deadliest of all snakes, since scientists believe it to be responsible for more human deaths than all other snake species combined.
Predation. Adult mambas have few natural predators aside from birds of prey. Brown snake eagles are verified predators of adult black mambas, of up to at least 2.7 m (8 ft 10 in). Other eagles known to hunt or at least consume grown black mambas include tawny eagles and martial eagles.
It typically only takes 30-45 minutes for an Inland Taipan bite to kill a fully grown human. Given the fact that these snakes only live in remote locations, it is unlikely that you will survive the attack and reach medical attention in time.
The Eastern brown snake is responsible for around 60% of deaths caused by snakebite in Australia.