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Top 10 Deadliest Animals on Planet Earth With Fun Facts

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This planet is full of different species of animals and birds, some are cute and cuddly and are domesticated by humans, and others are very deadly, dangerous and venomous.

Top 10 deadliest animals on planet Earth.

Top 10 deadliest animals on planet Earth.

10 of the World's Deadliest Animals

Here is the list of 10 deadly and most dangerous animals on the planet, you would never ever want to mess with.

  1. Komodo dragon
  2. Crowned eagle
  3. Anaconda
  4. Poison dart frog
  5. Hippopotamus
  6. Blue-ringed octopus
  7. Box jellyfish
  8. Polar bear
  9. Saltwater crocodile
  10. Mosquito
Komodo dragon

Komodo dragon

1. Komodo Dragon

  • Binomial name: Varanus komodoensis
  • Conservation status: Endangered
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Reptilia
  • Order: Squamata
  • Family: Varanidae
  • Genus: Varanus
  • Species: V. komodoensis

Weighing more than 300 pounds and length reaching up to 10 feet, Komodo dragon is the biggest and heaviest lizard on the earth.

Found in Indonesian islands of Komodo, with a big snake like tongue, this giant lizard is even bigger than a crocodile, and is also very venomous.

A prey feeling lucky enough to get out of its mouth alive, would not even survive longer because of its super toxic venom which cause lowering the blood pressure, induce shock, massive bleeding and prevent clotting, leading to death.

Komodo dragon's shark like big teeth can eat anything from cows, pigs, deer to as big as water buffalo and even humans.

Fun fact

Although Komodo dragon can't see or hear very well, but they have an amazing sense of smell. Instead of nose, they use their forked tongue to smell. By using their tongue they can smell dead animals to feed on, from four to ten kilometres away.

Crowned Eagle

Crowned Eagle

2. Crowned Eagle

  • Binomial name: Stephanoaetus coronatus
  • Conservation status: Near Threatened
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Aves
  • Order: Accipitriformes
  • Family: Accipitridae
  • Genus: Stephanoaetus
  • Species: S. coronatus

There are more than 30 types of eagle, but the crowned eagle is the most dangerous of all. If we call it the most dangerous bird, it would not be an exaggeration. It is found in the mountains, grasslands, and forests of Southeastern, and Central Africa.

Out of the way the crowned eagle has very large talons and strong legs, which help to kill its prey by crushing their skulls, and breaking their spines. It can attack on a prey even four times bigger than its size.

It often kill their prey by taking them high in the air and then throwing them down from height. An incident was also reported in America where a crowned eagle attacked on a small girl in a park.

Fun fact

These birds are monogamous and mates for life, and breed once every two years. After breeding the pair start to build a huge nest, on a large forest tree, where female fetch building material, whereas male seems to be more active in nest construction. Egg laying seems to peak from July to November, in which female lays 1 to 2 eggs.

Green Anaconda

Green Anaconda

3. Green Anaconda

  • Binomial name: Eunectes murinus
  • Conservation status: Least Concern
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Reptilia
  • Order: Squamata
  • Family: Boidae
  • Genus: Eunectes
  • Species: E. murinus

There are various types of anaconda but Green Anaconda also known as the 'giant anaconda' is the most treacherous one of all.

This 20 to 30 feet long snake, weighing up to 550 pounds and more than 12 inches in diameter, is the biggest and heaviest snake on the earth.

This South American snake is non-venomous unlike other snakes, but its huge weight and size is what makes it deadly. This giant snake can elongate to the size of a school bus and coils itself around its prey until it asphyxiates.

They usually feed on deer, turtles, wild pigs and even jaguars, and after eating a big meal they can survive for weeks or even months without eating food.

Fun fact

The female anaconda is larger and heavier than the male anaconda. Anaconda exhibits the largest sexual dimorphism, with the females larger in size, than any other tetrapod species. The average size of female is about 15 feet (4.5 m), where the average size of male anaconda is 9 feet (2.7 m).

Poison Dart Frog

Poison Dart Frog

4. Poison Dart Frog

  • Binomial name: Dendrobatidae
  • Conservation status: Near threatened
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Amphibia
  • Order: Anura
  • Family: Dendrobatidae
  • Genera: Colostethinae, Dendrobatinae, Hyloxalinae
  • Species: Many different species

This colorful tiny creature might look beautiful, but it is the highly toxic animal in the world. These beautiful and vibrant colored species can be seen in the red, blue, copper, gold, green yellow and black colors.

Found in the tropical forests of Costa Rica and Brazil, these frogs are very poisonous. Hunters in South America used their poisons to hunt other animals.

This species that have great toxicity derive this from food they eat like, ants, mites and termites. One Golden poison frog is enough toxic to kill 10 grown men, so if you ever see them just don't get attracted to their beautiful colors, just run right away quickly.

Fun fact

The drug called 'Epibatidine', extracted from these poison dart frogs, apparently act as a strong pain killer. Its pain killing properties are even two hundred times stronger than morphine.



5. Hippopotamus

  • Binomial name: Hippopotamus amphibius
  • Conservation status: Vulnerable
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Mammalia
  • Order: Artiodactyla
  • Family: Hippopotamidae
  • Genus: Hippopotamus
  • Species: H. amphibius

This animal can weigh up to 4 tons and its size can be 9.5 to 14 feet. They are often considered as very calm and sluggish animals, and you enjoy watching them in zoo, unless you see them in wild. When it comes to humans or any threatening animal they can be very aggressive.

Hippos are the deadliest land animal, with an average killing of 500 people per year in Africa. They are territorial, and if you enter in their territory they may consider you a threat, and they will not hesitate to harm you anyway.

Female hippo give birth to a baby every two year, and after giving birth both the mother and calf are provided with protection from wild animals like lions, hyenas and crocodiles.

Fun fact

Hippos secrete a red oily substance which gave rise to the myth that hippos sweat blood. But in fact, this oily red liquid keep their skin moisturized, and act like a sunblock. It may also provide protection against germs.

Blue-ringed Octopus

Blue-ringed Octopus

6. Blue-ringed Octopus

  • Binomial name: Hapalochlaena lunulata
  • Conservation status: (N/A)
  • Kingdom: Animalia
  • Phylum: Mollusca
  • Class: Cephalopoda
  • Order: Octopoda
  • Family: Octopodidae
  • Genus: Hapalochlaena
  • Species: Four different species

Found in the tide pools in the Pacific Ocean between Japan and Australia and also in Indo-Pacific islands, this Blue ringed octopus family consists of four venomous species of octopus which are small in size but deadly toxic.

This 10cms long animal is the coolest looking of all octopus, but that does not mean you should ever go near it. Their venom is enough to kill 20 adult humans within a few minutes, and there is still no antidote for its poison. But don't worry, they won't attack, unless they feel provoked.

Mostly they are found in yellow or sand colors, and bright blue rings appear when they are about to attack, so whenever you see a glowing cool blue ringed octopus, just don't ever try to mess with this tiny super venomous creature.

Fun fact

Blue-ringed octopus has a short life span of about 2 years. Both male and female die, during the reproductive process. Soon after mating, the male dies. The female lays eggs, and incubates them for six months. During this time she doesn't feed at all and dies of starvation.

Box Jellyfish

Box Jellyfish

7. Box Jellyfish

  • Binomial name: Cubozoa
  • Conservation status: (N/A)
  • Kingdom: Animalia
  • Phylum: Cnidaria
  • Class: Cubozoa
  • Order: Carybdeida, Chirodropida
  • Family: Eight families
  • Genus: (Unspecified)
  • Species: More than 51 different species

Jellyfish is the most toxic animal on planet earth. Its venom is a direct threat to your skin, your nervous system and ultimately your heart. They usually live in the water of Northern Australia and Indo-Pacific.

The notorious box jellyfish develops its deadly venom to instantly stun or kill prey, like shrimps and fishes, so they don't struggle to escape and damage its delicate tentacles. Their size can be as long as 10 feet and its pale blue color makes it a perfect camouflage in the deep water of ocean.

Its single sting can cause an overwhelming pain and multiple stings can cause human victims to go into shock and drown or die of heart attack shortly, so never ever try to mess with this deadly creature.

Fun fact

Box jelly fish can reproduce both sexually, and asexually. They have the ability to produce both sperm and eggs independently, irrespective of their gender. In adult stages, sexual reproduction can happen, when adults release sperm and eggs in the water. Fertilization takes place, and creates a larvae. Larvae then reproduces asexually, and creates its clones. These clones are attached to larvae until become adults.

Polar Bear

Polar Bear

8. Polar Bear

  • Binomial name: Ursus maritimus
  • Conservation status: Vulnerable
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Mammalia
  • Order: Carnivora
  • Family: Ursidae
  • Genus: Ursus
  • Species: U. maritimus

Polar bears might look cute and cuddly, but one should stay far away from them as they are hyper-carnivorous.

These about 8 feet tall and 900 to 1600 pounds heavy Arctic inhabitants are covered in thick coat of white heavy insulated fur which protects them from extreme and harshest cold of Arctic region.

They have black skin underneath the white fur to better soak the sun's warming rays.

They usually feed on seals and carcasses of dead whales, but their hyper-carnivorous nature and no fear of humans make them a dangerous animal.

Fun fact

Polar bears like to be clean and dry, and when they get dirty, for example after meals, they roll on ice surface to clean their fur, because wet and dirty fur is a poor insulator. And in Arctic extreme cold, insulation is the key to survival.

Saltwater Crocodile

Saltwater Crocodile

9. Saltwater Crocodile

  • Binomial name: Crocodylus porosus
  • Conservation status: Least Concern
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Reptilia
  • Order: Crocodilia
  • Family: Crocodylidae
  • Genus: Crocodylus
  • Species: C. porosus

These epic animals weighing around 1000 pounds and their length reaching to 17 feet, are often referred as 'salties'.

They don't specifically hunt humans, but they are opportunistic predators, they can eat anything close to their jaws, including wild boars, monkeys, to as big as water buffalo to sharks and even humans.

Due to its power, speed, and intimidating size, the survival of victim is highly unlikely, If the crocodile is able to make a direct contact.

An estimated 1000 humans are get killed by crocodiles per year, all around the world, which are way more than sharks.

Fun fact

They have the strongest bite of any living animal. Saltwater crocodile has been confirmed as having the highest bite force ever recorded for an animal, which was 9.59-metre-long (15 ft 1 in), when tested in laboratory settings.



10. Mosquitoes

  • Binomial name: Culicidae
  • Conservation status: Secure
  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Diptera
  • Family: Culicidae
  • Genus: 41 genera
  • Species: Over 3500 different species

Don't underestimate the power of this tiny creature. They are found almost everywhere on this planet, and cause much more fatality than any other animal or insect.

This animal as small as 3 mm is responsible for a crazy number of deaths, about 750,000 people are killed every year by mosquito borne diseases.

There are about 3000 different kinds of mosquitoes around the world and many of them carry diseases like, chikungunya, encephalitis, yellow fever, malaria, Zika virus and most famous of all dengue.

About 700 million people are get bitten by these animals every year. According to World Heath Organization, more than half of the human population is at risk to the diseases that come from mosquitoes.

Fun fact

Most people think that all mosquitoes bite, but this may surprise you, that only female mosquitoes bite. The blood provides them protein and other compounds, that are essential to help them produce and develop eggs.

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2021 Amara


Amara (author) from Pakistan on September 28, 2021:

Thank you very much Chitra di, I am glad to know that you found it interesting.

Thanks for your visit and comment. Blessings always.

Chitrangada Sharan from New Delhi, India on September 28, 2021:

Hi Amara!

I posted a comment earlier, but can't find it. Nice and interesting details about the deadliest animals.

Thank you for sharing!

Amara (author) from Pakistan on September 28, 2021:

You are absolutely right.

Miebakagh Fiberesima from Port Harcourt, Rivers State, NIGERIA. on September 28, 2021:

Amara, that's why a family should use a mosquitoe net to sleep under as a protective measure against a bite.

Amara (author) from Pakistan on September 28, 2021:

Yes Miebakagh, as mosquitoes are resposible for a large number of deaths each year, so they are most dangerous of all.

Thanks for your visit and comment. Have a nice day.

Miebakagh Fiberesima from Port Harcourt, Rivers State, NIGERIA. on September 27, 2021:

Amara, the mosquitoe is the most dangerous. Thanks for an informing read.

Amara (author) from Pakistan on September 27, 2021:

Hello Rozlin, thank you so much for your concern sweet. Alhamdulillah, I am completely fine, and recovered now.

Thanks for your visit and lovely comment sister.

Allah bless you always. Much love dear.

Amara (author) from Pakistan on September 27, 2021:

Thank you so much Peggy dear, I am really happy to know that you loved the article and found it interesting.

It means alot. Much love and gratitude.

Rozlin from UAE on September 27, 2021:

How are you? I read you too were hit with corona. Take care of yourself. Continue with the protein rich diet to have the good health back.

Rozlin from UAE on September 27, 2021:

Interesting and informative article, Amara. I learnt a lot from your article. Thank you for sharing.

Blessings and Much Love.

Peggy Woods from Houston, Texas on September 27, 2021:

Your article about the 10 deadliest animals on earth is most interesting. I learned much from reading your article.

Amara (author) from Pakistan on September 27, 2021:

Yes Rupert, you are right.

Thanks for your visit and comment.

Amara (author) from Pakistan on September 27, 2021:

Haha Misbah dear no need to go anywhere, your home is the safest place these days and always.

Stay healthy and safe. Spread love and positivity, like you always do, and thats I love about you dearest sister.

Allah bless you. Salam.

Amara (author) from Pakistan on September 27, 2021:

Thank you Srushti dear. I am really happy to know that you loved the article.

I really appreciate your visit and comment. Have a great week.

Amara (author) from Pakistan on September 27, 2021:

Thank you very much Pamela, your kind and encouraging comments always make me smile.

And that's your positive persona. Much love and gratitude. :-)

Rupert Taylor from Waterloo, Ontario, Canada on September 27, 2021:

I suggest the most dangerous animal on the planet is us - humans. Most of the species you name may well become extinct because we are destroying their habitats and our activities are causing global heating that will kill off others.

That said, I would certainly not want to meet up with a saltwater croc.

Misbah Sheikh from — This Existence Is Only an Illusion on September 27, 2021:

A very interesting and informative article, Amara. I enjoyed learning about these animals. Thanks for sharing and creating this beautiful hub. I think we need to go to Mars. Earth has too many deadly creatures ;)

Blessings and Love, dear sister

Srushti Gamit on September 27, 2021:

Very informative and detailed article Amara!!

I really like how you mentioned the taxonomical rank for each animal.

Thanks for sharing

Take care

May god bless you abundantly

Pamela Oglesby from Sunny Florida on September 27, 2021:

This is a fascinating article about dangerous wild animals, Amara. I especially like your fun facts. I learned a lot from your article.