Ten most toxic animals of our planet!

Puffer fish
Puffer fish

Any of these animals can be the number 1 toxic on earth as it's very hard to judge them. They all contain different toxic chemicals which can kill a human in minutes. So i have rated them based on how much dangerous these are to human beings.

10.Puffer Fish:

These are the second most toxic invertebrate of our planet. 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, and there is no known antidote.

Amazingly, the meat of some pufferfish is considered a delicacy. Called fugu in Japan. There are more than 120 species of pufferfish worldwide. Most are found in tropical and subtropical ocean waters, but some species live in brackish and even fresh water.

Golden poison dart frog
Golden poison dart frog

9. Golden poison dart frog

These are the most toxic invertebrate of our planet. 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. Their diet includes flies, crickets, ants, termites, and beetles.

Scientists are unsure of the source of this frog's amazing toxicity, but it is possible they assimilate plant poisons, which are carried by their prey. Poison dart frogs raised in captivity and isolated from insects in their native habitat never develop venom.

Inland Taipan
Inland Taipan

8. Inland Taipan

The most poisonous land snake on earth. Just a single bite from this snake contains enough venom to kill 100 human adults or an army of 250,000 mice. The Inland Taipan’s extremely neurotoxic venom can kill an adult human in as little as 45 minutes. Fortunately this snake is very shy and there have been no documented human fatalities (all known bites were treated with antivenin).

This snake is found in remote outback of Australia and rarely come in contact with humans. It feeds on rodents and rats.

Brazilian wandering spider
Brazilian wandering spider

7. Brazilian wandering spider

Brazilian wandering spider or banana spider is the most toxic spider and one of the most toxic animal on earth. It appears in the Guinness Book of World Records 2007 for the most venomous spider and is the spider responsible for most human deaths.

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. 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. Its venomous bite causes not only intense pain, the venom of the spider can also cause priapism – uncomfortable erections lasting for many hours that lead to impotence.

Stone fish
Stone fish

6. Stone fish

The stone fish is the most toxic fish on earth. 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 stores its toxins in gruesome-looking spines that are designed to hurt would-be predators.

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.

Death stalker scorpion
Death stalker scorpion

5. Death Stalker Scorpion

This is the most lethal scorpion on earth. Its very potent venom helps it compensate for its smaller size and narrow, weak pincers; this scorpion’s sting injects extremely toxic venom (a neurotoxin) that can cause extreme pain, fever, convulsions, paralysis, and often coma or death in humans (by heart or respiratory failure).

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.

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.

Sea snake (Hydrophis belcheri)
Sea snake (Hydrophis belcheri)

4. 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.

Marbled cone snail
Marbled cone snail

3. Marbled cone snail

I never thought snails would ever be dangerous, i played with them so much when i was young. However Don't even think of picking this snail - The marbled cone snail. It is one of the most toxic animal of our planet.

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. The snail’s venom is a neurotoxin that causes coordination loss and weakness. Local pain, numbness, and swelling may occur in its victims. When stung by this snail your hearing, vision, and speech will be affected. In some case respiratory muscle paralysis has lead to death.

It is found in indo-pacific waters.

Blue ringed octopus
Blue ringed octopus

2. Blue Ringed Octopus

The blue ringed octopus carries enough poison to kill 26 adult human beings within minutes. It has no antidote.

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.

They can be found in tide pools in the Pacific Ocean, from Japan to Australia.

The poison is not injected but is contained in the octopus's saliva, which comes from two glands each as big as its brain. Poison from the one is used on its main prey, crabs, and is relatively harmless to humans. Poison from the other gland serves as defence against predators. The blue-ringed octopus either secretes the poison in the vicinity of its prey, waits until it is immobile and then devours it, or it jumps out and envelops the prey in its 8 tentacles and bites it.

Box jelly fish
Box jelly fish
Irukandji jelly fish
Irukandji jelly fish

1. Jelly fish

The most toxic animals on the planet are the jelly fish of them the deadliest are box jelly fish and irukandji jelly fish.

Death in 2 minutes. This is what scientists have found out about this jelly fish and it's cousin the irukandji jelly fish.

It’s toxins attack the heart, nervous system, and skin cells. And the worst part of it is that jelly 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.

The box jellies are found in the asian and australian waters.

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.

The deadly Irukandji jellyfish is a tiny killer and can be unnoticed in the water.

With bell and tentacles just 2.5 centimetres across, it is almost impossible to detect.

It has got stingers on its bell too unlike the box jelly fish which sting only through the tentacles.

The Irukandji jellyfish inhabits the northern Australian waters in a wide sweeping arc from Exmouth in Western Australia to Gladstone in Queensland.

Which of these toxic creatures impressed you the most?

  • Puffer fish
  • Golden poison dart frog
  • Inland taipan
  • Brazilian wandering spider
  • Stone fish
  • Death stalker scorpion
  • sea snake
  • Marbled cone snail
  • Blue ringed octopus
  • Box jelly fish
  • Irukandji jelly fish
See results without voting

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Comments 23 comments

Cleanclover profile image

Cleanclover 5 years ago from Piece of land! Author

Hope you did not encounter any stone fish there Robin :-). Thank you for your comments.


Robin J. Storm profile image

Robin J. Storm 5 years ago from Ontario, Canada

I remember from being in the Red Sea about watching out for deadly stone fish WOW!


Cleanclover profile image

Cleanclover 5 years ago from Piece of land! Author

Thank you everybody :-))


James 5 years ago

wow, they are cute but so deadly, thanks for sharing, i learn something new :) Great hub


neo65 5 years ago

the stonefish killed a man that went swimming in the southarn reigain because he tought they were comletly harmless to humans well 500 seconds later and he didn't come out wow blood everywhere


nats 5 years ago

hahahahaha this our topic for school DUMBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB ANIMAL$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$!!!!


jutty 5 years ago

i love my mummy


Andrew 6 years ago

Both Frogs and Puffer Fish are not invertebrates

_For the Puffer Fish_

Kingdom: Animalia

Phylum: Chordata

Subphylum: Verbrata

Superclass Osteichthyes

Class: Actinopterygii

Order: Tetraodontiformes

Family: Tetraodontidae

_Dart Frog_

Kingdom: Animalia

Phylum: Chordata

Subphylum: Verbrata

Superclass Tetrapoda

Class: Amphibia

Order: Anura

Family: Dendrobatidae

However the Wandering Spider, Death Stalker Scorpion, the Marbled Cone Snail, the Blue Ringed Octopus and the Jelly Fish are invertebrates.

Otherwise Interesting Article


Cleanclover profile image

Cleanclover 6 years ago from Piece of land! Author

Thank you Grim. No problems with english :-)


Grim 6 years ago

ad) dart frog

...it's true, scientists believe, that dart frogs assimilate their toxin for a WHOLE lifetime by eating special plant, since their venom is from Alkaloid class of toxins(alkaloids == family of plant defensive toxins to prevent bugs from feasting on 'em)...As article says, we're unable to make them produce their toxin in captivity, since we're unsure of toxin's origin....sorry 4english:)...just wanted to share my knowledge under this amazing article;)


AMAZED!!!!!!!!!!!!!! 6 years ago

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Cleanclover profile image

Cleanclover 6 years ago from Piece of land! Author

Yes hypno they are small but very dangerous.


hypnodude profile image

hypnodude 6 years ago from Italy

I didn't knew the existence of either the octopus and the snail. Very good hub. And great pics.


Cleanclover profile image

Cleanclover 6 years ago from Piece of land! Author

thanks for your inputs siklopz


Siklopz 6 years ago

Actually the most potent invertebrate toxin, palytoxin, is secreted by the "soft corals" called palythoas and some zooanthids. this happens to be the second most potent natural toxin after botulinum toxin, the bacterial toxin which causes botulism.


Cleanclover profile image

Cleanclover 6 years ago from Piece of land! Author

Anis, Check whether they have vertebrae? Thank you for the comment


anis 6 years ago

Why do you group frog and fish as invertebrate?

AFAIK, they are vertebrate.


Cleanclover profile image

Cleanclover 6 years ago from Piece of land! Author

yes compu-smart deadly things come in small packages don't they? Thank you


compu-smart profile image

compu-smart 6 years ago from London UK

Very small and deadly! Lucky for me the percentage of me coming into contact with any of these are thankfully very slim!


Cleanclover profile image

Cleanclover 6 years ago from Piece of land! Author

Thank you jerilee Wei. Yes man indeed so i should be careful of you.


Jerilee Wei profile image

Jerilee Wei 6 years ago from United States

Excellent list and read. The only one I would add is "man." :D


Cleanclover profile image

Cleanclover 6 years ago from Piece of land! Author

thank you Peter Dickinson poison dart frog will always be there


Peter Dickinson profile image

Peter Dickinson 6 years ago from Southeast Asia

I looked at the list and thought how close I had come to so many of these. Was poisoned by a poison arrow frog once over. Happily still here. Thank you for the hub.

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