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The World's Deadliest Animals

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Dangerous, Poisonous and Venomous Creatures: the World's Deadliest Animals

Discover some of the deadliest animals in the world. Many of the world's deadliest animals are tiny, look quite placid and are great at camouflage. These deadly animals lurks where you least expect them, and if you are not careful, or fooled by their tiny size, they may sneak up on you and kill you.

The intro photo of a blue poison dart frog is courtesy of oli23000 under creative commons

You see, these deadly animals are extremly poisonous and venomous. The world's deadliest animals are full of bad surprises. Come with me and meet some of the world's deadliest animals.

Meet The World's Deadliest Animals

Nature's Deadliest Episodes

Watch some of the world's deadliest animals

The Puffer Fish

Also known as fugu

puffer fish

One of the deadliest animals in the world, the puffer fish can look relatively harmless at first because of its small size. But don't let its size fool you! If you're able to catch this little guy, then you'll be in for a long bout of agony as the dozens of small spines that run the length of its body poke and tear your flesh. Animals that eat the puffer fish are in for even more pain. If they don't choke to death on the spines, then the puffer fish's startlingly strong poison (it is the second-most poisonous vertebrate in the world) is sure to finish them off. It's so strong that it has even been known to kill humans who dare to eat it.

Some of its internal organs ( ovaries, liver and the intestines ) and its skin are toxic due to the presence of tetrodotoxin. Death by suffocation occurs when the diaphragm muscles are paralyzed. The tetrodotoxin contained in the puffer fish is extremely potent, luckily it can only kill you if you eat it. Fugu is an expensive delicacy is you are brave enough!


Close-up of a Puffer Fish, Bahamas

Puffer Fish Posters and Prints

Click any image for a larger view and more details

Fugu, the Safe Way

Eat some of the world's deadliest animals

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Puffer fish facts for kids

A nice book for kids


Puffer Fish (Blastoff! Readers: Oceans Alive)

Kids love to learn, and they are fascinated by all weird creatures. Puffer fish are unique and interesting, kids will be amazed. In this book, kids will learn some interesting facts about the the puffer fish: eating habits, how they fend off predators, in what part of the ocean they live. 24 pages with illustrations.

The Stone Fish: Another World's Deadliest Animals

Placid, cute and deadly

Deadly Stone Fish

Another dangerous fish, the so-called stone fish's sting is so painful that many of its human victims cry out to have their affected limbs amputated. To make matters worse, it also employs a method of camouflage as a defense mechanism and can be almost invisible when hovering next to stones (hence its name). Unlike the puffer fish though, its poison is actually in the form of a venom which is released into predators (or unsuspecting feet) through a series of long spines on its back. If you're ever in Australia be careful, they live in both rivers and along the ocean shore. You definitely don't want to come home from a vacation with a story of a stone fish sting to tell!

Deadly Stone Fish, off Sharm El-Sheikh, Sinai, Red Sea, Egypt, North Africa, Africa

Can you Spot the Stone Fish?

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Blue Ring Octopus

Blue ring octopus photo

Yet another creature on the world's deadliest animals, the terror of the deep blue sea. You don't even have to come face to face with the blue-ringed octopus to know that it's poisonous. The vivid blue rings which line its back (and for which it is named) just look poisonous. And the animal is. The blue-ringed octopus is right up there as one of the ocean's deadliest animals. Though it is a fairly docile creature and won't attack unless provoked, its venom is fatal to humans. To make matters worse, there is no known antivenom. If you ever see a blue-ringed octopus, then you better run (or swim) as fast as possible in the opposite direction.


Southern Blue Ring Octopus, South Australia

There is no known antidote for the bite of a blue-ringed octopus.

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Pictures of Blue Ring Octopus

I am not sure I'd stick my finger near any of these like this guy is doing

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Blue ring octopus pictures

This photo of a blue poison dart frog is courtesy of Angell Williams under creative commons

Kid's Book About the Blue Ring Octopus

4 to 8 years old readers

Blue-Ringed Octopus: Small But Deadly (Afraid of the Water)

24 pages about the Blue Ring Octopus: what it eats, how it survive, where it lives, why the color blue mean danger and more fun facts. Good read for young readers aged 4 to 8.

Poison Dart Frog

Oh yea, that little frog is on the list of the world's deadliest animals!

Poison dart frog photo

Poison dart frogs are widely considered to be one of the most dangerous animals in the world and for very good reason. Cute as these little guys might be, they pack a poisonous punch (they aren't called poison dart frogs for nothing) and some subspecies are lethal to humans. Native peoples in the South American forests where the dart frogs live have actually rubbed the poison on the tips of their spears (and darts) for hundreds of years. Luckily though, poison dart frogs are usually vivid in color (yellow, blue, green, and red) so they are easy enough to spot and detour around.

poison dart frog Poster

Poison Dart Frogs Photo Gallery

click to enlarge

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Poison Dart Frogs Care Book

Poison Dart Frogs: A Complete Guide to Dendrobatidae (Complete Herp Care)

This is an "How to" type of book. How to keep, care for and breed those colorful, yet dangerous, poison dart frogs. Many color pictures, bibliography as well as a link list to interesting websites. A very extensive index so you can quickly find what you are looking for. 128 pages.

The Sea Wasp aka Box Jellyfish

Box Jellyfish photo

Also known as the sea wasp, the box jellyfish really does pack one heck of a sting! The sea wasp is found in tropical location such as Hawaii, the Philippines and Australia. Their venomous strings are painful and deadly. Each Sea Wasp tentacle has 500,000 venom filled needles. It can extend its tentacles up to 3 meters! Since the mid 1950's there was at least 5,500 deaths because of the Sea Wasp. Even the dead Sea Wasp, found on the beaches, can sting (the jellyfish's long tentacles house the poison and even severed tentacles washed up on beaches can cause quite a pain).
It's extremely potent venom is almost unbearably painful to humans and in many cases is lethal. Swimming areas where the jelly fish is often found have recently become equipped with nets (to ward the creature off) and antivenom (for emergency first aid).


Box Jellyfish or Sea Wasp, Poisonous, Australia

The Box Jellyfish (Sea Wasp), Species, Distribution, First Aid & Symptoms

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The Inland Taipan

Most venomous land snake

Inland Taipan photo

Snakes have always been considered dangerous and devilish animals in many circles and the inland taipan is no exception. This slithery creature is actually the deadliest snake in the world. Native to Australia, it primarily feeds on mice and other small rodents in the area. In fact, the inland taipan keeps to itself so much that the only recorded human bites have been on the scientists studying the snake. And lucky for them, the antivenom was always close at hand so there have been no recorded human deaths to date.

This inlan taipan photo is used under creative commons, courtesy of g_kat26

Watch one of the Most Venomous Snake in the World, the Inland Taipan

Don't try this at home!

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Brazilian Wandering Spider

An aggressive spider deserving its spot on the world's deadliest animals list

Even just this animal's name, the Brazilian wandering spider, sends shivers down your spine, doesn't it? To make matters worse, this highly venomous spider is also very defensive - if you bug it, then you're going to pay. Even though a lot of people consider almost every type of spider creepy and crawly, the wandering spider is one of only a few species lethal enough to kill a human.

Brazilian Wandering Spiders are found in South America. Their bites are responsible for more human deaths than the bites of any other spider species. They wander the forest floor and hide under rocks or wood pieces. They don't make webs of lairs. They are aggressive spiders and are known to attack on sight. Their venom cause muscle paralysis leading to asphyxiation.

This Brazilian Wandering Spider photo is used under creative commons, courtesy of Wikipedia

Video of Brazilian Wandering Spiders

Don't watch if you suffer from arachnophobia (walking bare feet in there...seriously? This guy must be mad)

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Marbled Cone Snail

Sneaky snail!

Marbled Cone Snail

Snails probably aren't one of the first animals that you think of when you think "world's deadliest animals," but the marbled cone snail (an ocean-dwelling species) is surprisingly so. Marbled Cone Snails are found in warm saltwater environments. These small snails can be extremely dangerous. The little bugger actually uses a nifty method to deploy its venom. It has a needle-like tooth and a venom gland that actually act much like a miniature harpoon. But the pain from one of its "harpoon" stings definitely isn't miniature. It is very painful and can even result in death. One drop of venom can kill 20 adults! The toxin cause tingling, swelling, pain, and numbness, and eventually muscle paralysis, vision changes and breathing failure. The cone snail's harpoon has even been known to pierce wetsuits - it is just that strong. Although only 30 human deaths have been reported, it is still an impressive little bugger.

This Marbled Cone Snail photo is used under creative commons, courtesy of Wikipedia

The Mosquito

The world deadliest animals?

malaria mosquito poster

Mosquitos are actually one of the most dangerous types of animals in the world because they are so small, so common, and there are so many different types. In fact, they have probably killed more humans than all of the other animals on this list combined. They aren't really that dangerous in themselves, at least individually, but the deadly diseases that they carry and transfer to humans through bites are. Malaria and dengue fever are two of the most common diseases transferred by mosquitos. Mosquitoes also carry many different variation of encephalitis, yellow fever and many more deadly diseases. Luckily for humans, in most populated places forms of mosquito control are in effect. Their numbers are both artificially and naturally reduced (through introduction of predators such as dragonflies), and a number of medicines and vaccines are available to protect people from their bites. Still, they kill 2 million people a year. In most countries, mosquitoes are just annoying, but in third world countries, they are deadly killers.

Protect Yourself Mosquito Proof Your Home Poster

Mosquito: A Natural History of Our Most Persistent and Deadly Foe

Learn More About Mosquito Borne Diseases

Mosquito Information : Where Do Mosquitoes Get Their Diseases?
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2 ratings | 1,860 views
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I am Wondering How People in Australia Survive

They got their share of world's deadliest animals!

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So would you take a chance and move to Australia?

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Were you Scared? Surprised?

  • I'll stay out of the way of these very dangerous animals. Luckily I live in western Canada where pretty much the scariest animal here is our bears if you happen to surprise one when he or she is not expecting to run into you.
  • Thank you for sharing this remarkable lens "The World's Deadliest Animals"
  • Such a shame Steve Irwin died (R.I.P). I've been stung by a scorpion once. It felt like when you burn yourself with hot oil, only it lasts about a month.
    I'll try and stay away from these on this page though.
    Very nice page, Blessed.
  • Amazed about the snail, but the octopus is so beautiful! That was an informative read. Thank you.
  • Haha. Australia gets a bad rep for all its dangerous wildlife, but truthfully, you'll be okay as long as you know where all these dangerous creatures live and when they'll be there. Great article!
  • Steve Irwins "playing" with the taipan inland snake cannot be commented.. :) there's a lot of useful information here and I enjoyed reading it. Maybe the coral snake is missing, as it should be the most poisonous snake in the world.
  • So small but scary for some! Thanks for the lens share!
  • Not scared or surprised as well but nice lens. Well every animal has got their own power. I don't dislike deadliest animal, they would remain calm unless you disturb them. A snake would never bite you unless you disturb it or try to catch it, believe me. They react only when they feel you are gonna do something bad or disturbing them.
  • Well done! Wonderful information on the worlds deadliest animals - all of which I hope to never see in the wild. Blessed.
  • Soome amazing photos and videos, this was fun to read.
  • I had to get help from Kellie, a professional snake catcher, when a deadly Aust. brown snake entered my yard! Ack! She is so brave!
  • Terrific lens. I couldn't believe how fast the Stone Fish moves. I'm glad I don't go in the water when I'm on holidays.
  • The young boys should really enjoy this one! Well done and educational.
  • That blue frog is really pretty...
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The world's deadliest animals: scary, dangerous, poisonous, venomous critters. Read about them here. Frogs, spiders, fishes, snails. Even the most pla... more »

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