Top 10 Most Poisonous Animals in the World

10. Puffer Fish 

This puffy fish produce rapid and violent death..Puffer’s poisoning causes deadening of the tongue and lips, dizziness, vomiting, rapid heart rate, difficulty breathing, and muscle paralysis. Victims die from suffocation as diaphragm muscles are paralyzed. Most of the victims die after four to 24 hours. There is no known antidote.
Almost all pufferfish contain tetrodotoxin, a substance that makes them foul tasting and often lethal to fish. To humans, tetrodotoxin is deadly, up to 1,200 times more poisonous than cyanide. There is enough toxin in one pufferfish to kill 30 adult humans.


9. Inland Taipan

Just a single bite from this snake contains enough venom to kill 100 human adults or an army of 250,000 mice. Its venom is at least 200 – 400 times more toxic than a common cobra. The Inland Taiwan’s extremely neurotoxic venom can kill an adult human in as little as 45 minutes.
This snake is found in remote outback of Australia and rarely come in contact with humans. It feeds on rodents and rats.


8. Poison Dart Frog

The 2 inch long (5cm) golden poison dart frog has enough venom to kill 10 adult humans or 20,000 mice. Only 2 micrograms of this lethal toxin (the amount that fits on the head of a pin) is capable of killing a human or other large mammal. They are called “dart frogs” because indigenous Amerindians’ use of their toxic secretions to poison the tips of their blow-darts.
They live within a tiny plot of rain forest on the Pacific coast of Colombia. Their coloring, which can be yellow, orange, or pale green, depending on their particular range, is deliberately ostentatious to ward off potential predators, a tactic called aposematic coloration.


7. The Brassilian Wondering Spider

This spider is believed to have the most potent neurotoxic venom of any living spider. Only 0.006mg (0.00000021oz) is sufficient to kill a mouse. They are also so dangerous because of their wandering nature. They often hide during daytime in highly populated areas inside houses, clothes, boots, and cars.
Brazilian Wandering Spiders are extremely fast, extremely venomous, and extremely aggressive.This spider is believed to have the most potent neurotoxic venom of any living spider.



6. Stone Fish

Its venom causes such a severe pain that the victims of its sting want the affected limb to be amputated. It is described as the worst pain known to man. It is accompanied with possible shock, paralysis, and tissue death. If not given medical attention within a couple of hours It can be fatal to humans.
Stonefish mostly live above the tropic of Capricorn, often found in the shallow tropical marine waters of the Pacific and Indian oceans, ranging from the Red Sea to the Queensland Great Barrier Reef.


5. Death Stalker Scorpion

Death Starker Scorpion is highly dangerous species because its venom is a powerful cocktail of neurotoxins which causes an intense and unbearable pain, then fever, followed by coma, convulsions, paralysis and death. Fortunately, while a sting from this scorpion is extremely painful, it would be unlikely to kill a healthy, adult human.
The neurotoxins found in Death Stalker venom are being studied by scientists, who hope to find in them a treatment for some diseases, noteably some forms of brain cancer, and diabetes. 
The Death Stalker Scorpion is found in North Africa and the Middle East. It prefers a dry climate, and makes its home in natural burrows or under stones.


4. Blue-Ringed Octopus

The Blue-Ringed Octopus is very small, only the size of a golf ball, but its venom is so powerful that can kill a human. Actually it carries enough poison to kill 26 adult humans within minutes, and there is no antidote. They are currently recognized as one of the world’s most venomous animals.
Its painless bite may seem harmless, but the deadly neurotoxins begin working immediately resulting in muscular weakness, numbness, followed by a cessation and breathing and ultimately death.


3. Marbled Cone Snail

One drop of its venom is so powerful that it can kill more than 20 humans.Symptoms of a cone snail sting can start immediately or can be delayed in onset for days. It results in intense pain, swelling, numbness and tingling. Severe cases involve muscle paralysis, vision changes and breathing failure. There is no antivenom. However, only about 30 human deaths have been recorded from cone snail envenomation.
The Marbled Cone Snail can vary in color from black with white dots to orange with white patterns. The Marbled Cone Snail has a unique way of trapping it prey. When the snail locates a passing fish it shoots out a toxic harpoon and then reels its prey in. The venom of the Marbled Cone Snail is designed to paralyze its victim allowing the snail to feast at its leisure. 


2. King Cobra

The King Cobra (Ophiophagus hannah) is the world’s longest venomous snake – growing up to 5.6 m (18.5 ft) in length. Ophiophagus, literally means “snake-eater” as it eats other snakes. One single bite of this deadly snake can easily kill a human. This snake is even capable of killing a full-grown Asian Elephant within 3 hours if the larger animal is bitten in a vulnerable area such as the trunk.



1. Box Jellyfish

The top prize for “The World Most Venomous Animal,” would go to the Box Jellyfish. It has caused at least 5,567 recorded deaths since 1954. Their venom is among the most deadly in the world. It’s toxins attack the heart, nervous system, and skin cells. And the worst part of it is that jelly box venom is so overpoweringly painful, that human victims go in shock, drown or die of heart failure before even reaching shore. Survivors experience pain weeks after the contact with box jellies.
You have virtually no chance to survive the venomous sting, unless treated immediately. After a sting, vinegar should be applied for a minimum of 30 seconds. Vinegar has acetic acid, which disables the box jelly’s nematocysts that have not yet discharged into the bloodstream (though it will not alleviate the pain). Wearing panty hose while swimming is also a good prevention measure since it can prevent jellies from being able to harm your legs.
Jelly box can be found in the waters around Asia and Australia.

And one bonus deadly snake for the end.

Sea snake (Hydrophis belcheri)

 

This is the most toxic snake both on land and in water. Also called faint-banded sea snake.
It has a friendly temperament and would normally have to be subjected to severe mistreatment before biting. Usually those bitten are fishermen handling nets, although only a quarter of those bitten are envenomated since the snake rarely injects much of its venom.
It has a myotoxic venom many times more effective than any land snake.

note: articles for this post are used from

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