Top 10 Dangerous Animals in the World


The top 10 dangerous animals in the world are the ferocious beasts that can scare one to death. They can be small in size but can cause significant loss of human life.

The dangerous animals are starred in Hollywood blockbusters who are human-eaters, creepy spiders cartelize the phobia department.

Let’s have a look at the top 10 dangerous animals in the world and where they exist.

1. Tsetse Fly:

The tsetse fly is the first on the top 10 dangerous animals in the world. They are also known as tik-tik flies. These biting flies and inhabit much of tropical Africa. They live on the blood of vertebrate animals and are multivoltine.

They produce about four broods per year and over 31 broods in their lifespan.

Scientific name: Glossina

Family: Glossinidae

Class: Insect

Kingdom: Animalia

How can we distinguish them from regular flies?

  • It is 6-15mm in length.
  • The bristle-like hairs on their body make them different from home flies.
  • Tsetse fold their wings completely when they are in rest mode.
  • This fly has long Proboscis attached to a distinct bulb on the bottom of their heads.
  • They are yellowish-brown to dark brown.
  • Tsetse’s are attracted to bright colors, especially bright blue.

What makes Tsetse Flies Deadly?

A bite by Tsetse fly can be the most uncomfortable and painful experience of your life. It causes African Trypanosomiasis aka sleeping sickness. The symptom of this disease starts with fever, headache, and aching muscles.

The infection can be fatal if it is not treated and reach the brain. The only prevention of this disease is to prevent Tsetse fly’s bit.

Interesting Facts About Tsetse Fly:

  • Male Tsetse fly usually attacks humans whereas females prefer animals.
  • The life span of an adult tsetse flies is one to three months.
  • An egg of the tsetse fly is hatched inside the womb of the mother and she disposes it on soil or shady surface. The larva keeps on growing outside the female’s body.
  • A larva buries himself into the soil and develops a hard shell around him until he became a pupa. Once it’s adult enough, it leaves its cocoon.
  • A toxin is released from the body of the larva that is enough to kill a human.

2.Mosquito: The Smallest Biggest Killer

Mosquito ranks as the second most dangerous animal in the world as it causes the sheer number of deaths every year.

They are present in every expanse of the world except Antarctica.

Scientific Name: Culicid

Clutch Size: 100-200

Speed: 1.6-2.4 km/h

Life Span: 7 Days

 Deadly Mosquito-borne diseases:

Its species can cause malaria, dengue. West Nile Virus, Zika Virus, Yellow fever, Chikungunya, Encephalitis, and elephantiasis. Collectively these diseases kill up to 700 million people per year around the globe.

Interesting Facts about Mosquitos:

  • Mosquito is a Spanish and Portuguese word that means little fly.
  • There are almost 3500 species of mosquitos but all of them don’t feast on human blood.
  • Female mosquitos bit as they need a blood meal before laying eggs. Male mosquito relies on plants.
  • They lay eggs in shallow water or damp soil which is why it is advisable to get rid of any standing water near your vicinity.
  • This little creature love to rest in cooler places.
  • Mosquitos are attracted to the Carbon dioxide and sweat of the human body.

The prevention is to use mosquito repellent sprays and mosquito nets.

3. Salt Water Crocodile:

Saltwater crocodiles are aggressive, short-tempered, easily provoked, and excellent swimmers.

Moreover, they are the largest killers in the world that may grow up to 23 feet in length. This giant can weigh more than a ton. They can put 5000 pounds of pressure on their jaws.

Scientific Name: Crocodylus Porosus

Mass:  Male= 1000 kg, Female =76-100kg

Length: Male= 4.3-5.2m, Female= 2.3-3.5m

Max Size: 23 feet

Speed: 24-29 km/h

Life Span: 70 Years (Adult)

Interesting Facts about Saltwater Crocodiles:

  • Saltwater crocodiles are Pro swimmers but can’t swallow their prey underwater.
  • They are the largest reptiles in the world.
  • The male crocodile can weigh up to 1000 kg
  • The adult saltwater crocodile has 66 teeth.
  • A saltwater crocodile’s life can be over 70 years.
  • Saltwater crocodiles communicate by hissing, chirping, growling, and barking.

Where to find saltwater Crocodile:

They can be found in the regions of Eastern India, Southeast Asia, and Northern Australia.

4. Stone Fish:

The fourth among the top 10 dangerous animals in the world is Stonefish. They are called stonefish as they resemble rocks and sit perfectly still. It is one of the deadliest fish in the world.

This sharp killer patiently ambush for their prey to come and then use their vacuum-like mouth to suck them in. Their swimming speed is very low and they eat small fishes, shrimp, and crustaceans.

The sting of stonefish can cause death if not treated properly. The sting occurs when a creature steps on the stonefish accidentally. It forces the venom into the body which can kill a human in an hour.

Stonefish does not use venom to ambush prey they instead use it to avoid predation.

Scientific Name: Synanceia Verrucosa

Found in: Red Sea

Rank: Species

Interesting Facts about Stonefish:

  • Stonefish is one of the most poisonous fishes in the world.
  • Their Camouflage skills are excellent.
  • Stonefish can survive out of water for 24 hours.
  • The poisonous sacks are found in the 13 spines of Stone Fish.
  • This venom can attack its prey in less than 0.015 seconds.
  • They produce a million eggs but only some of them survive.
  • Stonefish takes 3 years to mature.

5. Sydney-Funnel Web Spider:

The glossy black Sydney Funnel-web spider can cause the human nervous system to fall out. They like to build webs in sheltered burrows like shoes and lawn ornaments.

Moreover, they are aggressive enough to pierce human toenails.

Scientific Name: Atrax Robustus

Size: 1-5 cm

Kingdom: Animalia

Order: Spider

Interesting Facts about Sydney-funnel Web Spider:

  • There are 40 species of Sydney Funnel-Web Spider and they are the deadliest one among all.
  • These spiders make a funnel-shaped web and bury themselves in them up to 60sm deep.
  • Their fangs are larger than a brown snake.
  • Sydney funnel-web spiders are only found in Sydney.
  • The Sydney funnel-web spider bite is considered as a medical emergency. Hence the patient is checked after every 15 minutes.

6. Black Mamba:

The slithering speed (12.5 miles per hour) black mamba made it one of the deadliest animals of the world.

They only strike when threatened and once it attacks it bites repeatedly. The venom in single bite can kill up to 10 people. The victim must take anti-venom within 20 minutes otherwise it becomes fatal.

Scientific Name: Dendroaspis Polylepis

Speed: 16 km/h

Kingdom: Animalia

Venom: Neuro Toxins & Cardio Toxins

Teeth: Black mamba has flexible fangs & a windpipe.

Average Length: 8.2 feet

Interesting Facts about Black Mamba:

  • Black mamba likes to sleep in hollow trees, rock crevices, burrows, or empty termite mounds.
  • They live in low and open spaces.
  • Mamba can stand erect.
  • The female black mamba lays 6-25 eggs.
  • 2 drops of black mamba venom can kill a human.
  • It is the longest venom snake in the world.

7. Puffer Fish:

Pufferfish is also known as blowfish. They are found in tropical seas around the globe. Besides, being the second most poisonous vertebrates in the world, they are aggressive by nature and can puff up to three times than its original size.

Pufferfish contains tetrodotoxin, which is 1200 times more poisonous than cyanide. There is no antidote to the toxin of puffer fish which has the potential to kill 30 humans.

The poison of pufferfish can kill a human in 20 minutes to 24 hours.

Scientific Name: Tetraodontidae

Class: Actinopterygii

Kingdom: Animalia

Skeleton: It lacks ribs and pelvic fins. Bones are infused in the cranium and jaw.

Interesting Facts about PufferFish:

  • There are more than 120 species of Puffer fish in the world.
  • Pufferfish is considered as a culinary delicacy in Korea, Japan, and China.
  • They have admirable eyesight.
  • Moreover, they are burst of energy that can muster any predator.
  • Pufferfish does not have a scale but has a spine.
  • Their teeth never stop growing.

8. Indian Saw-Scaled Viper:

Saw-Scaled Viper stands at numer 8 in the list of top 10 dangerous animals in the world. Scientists believed that Indian Saw-scaled viper killed more humans in the history of the world than any other species combined.

It is an aggressive reptile and attacks often. furthermore, it is found in the parts of the middle east, central Asia, and specifically India. Usually, they are active at night and can be spotted by the sizzling sound they make while forming coils and running their scales together.

Scientific Name: Echis Carinatus

Class: Reptile

Kingdom: Animalia

Higher Classification: Saw-Scaled Vipers

Interesting facts about Indian Saw-Scaled Viper:

  • Saw-Scaled Viper is the only Echis species found in India.
  • They have highly keeled scales.
  • Saw-scaled vipers are also known as carpet vipers.
  • The female saw-scaled viper produces up to 23 eggs.
  • An adult’s range in length is 1-3 feet.

9. Box Jelly Fish:

These cnidarian vertebrates are distinguished by their cube-shaped medusa. They are the oldest multicellular animals on the globe.

Some of the species of box jellyfish produce extreme venom including Chironex, fleckeri, Carukia barnesi, and Malo Kingi.

A box jellyfish can weigh up to 2 kg and 3cm in length. The tentacles on four corners can grow up to 3m in length.

It is mostly found in the Indo-Pak region and Northern Australia.

Scientific Name: Cubozoa

Class: Werner 1973

Size: up to 20cm

Higher classification: Medusozoa

Interesting Facts about Box Jelly Fish:

  • A Box jellyfish has about 15 tentacles on each side and each tentacle has about 5000 stinging cells.
  • The stings are not triggered by touch but by the chemical present at the outer layer of its prey’s body.
  • Jellyfish don’t have a brain.
  • They never get tangled.
  • There are about 50 species of box jellyfish.
  • The box jellyfish can swim up to 6m per minute.
  • Moreover, they shrink if they don’t eat.

10. Golden Poison Dart Frog:

This bright colored frog has a secret weapon called batrachotoxin. One frog contains enough batrachotoxin to kill ten grown men.

A single individual can be killed by only 2 micrograms of this toxin. Furthermore, the scarier fact is that amphibian’s poison glands lie beneath their skin which means a touch can cause alarming trouble.

Though they are among endangered species but you can sight them in Northern South America.

Scientific Name: Phyllobates terribilis

Higher Classification: Poison Dart Frogs

Length: 5.5cm (Adult)

Kingdom: Animalia

Interesting Facts about Golden Dart Poison Frog:

  • Their beloved meal is poisonous ants and Insects.
  • A  male dart frogs take care of eggs in leaf litter and then carry his little ones on his back to sites with running water.
  • Dart poison frog lives up to 6-10 years.
  • The glossy creature can be mint green, yellow or orange.
  • They are extremely efficient in tongue hunting.

Well, the list would be incomplete if we don’t add humans to the list of dangerous species of the world. The killings in the name of caste, religion, and ethnicity throughout the globe have made man among the dangerous animals of the world.

Though we are social animals still there is the instinct of dangerous animals present in all of us somehow.

Anyways let’s move to some fun listings starting from;

 72 most dangerous animals in the world:

·         Asia

Claws & Jaws:

  1. Golden Eagle
  2. Coconut Crab
  3. Pacific water sharks
  4. Camel Spider
  5. Sun Bear
  6. Saltwater Crocodile


  1. Asian Rhinoceros
  2. Leopard
  3. Asian Forest Centipede
  4. Orangutan
  5. Toxic Flower Urchin
  6. Saw-scaled Viper


  1. Black Rat
  2. Slow loris
  3. Fat-tailed scorpion
  4. Indian cobra
  5. Poisonous toad
  6. Rove beetle
  7. Stingray


  1. Langur monkey
  2. Tiger
  3. Joro spider
  4. Tomistoma
  5. Asian needle ant
  6. Otter
  7. King Cobra


  1. Water buffalo
  2. Needlefish
  3. Toxic crab
  4. Mugger crocodile
  5. Box jellyfish
  6. Reticulated python

Pretty & Painful:

  1. Cone Snail
  2. Asian black bear
  3. Red panda
  4. Blue coral snake
  5. Eurasian lynx
  6. Asian elephant
  7. Red lionfish

Less travelled:

  1. Asiatic lion
  2. Komodo dragon
  3. Electric ray
  4. Golden jackal
  5. Wolverine
  6. Striped eel catfish
  7. Brown bear

Borough Jungle:

  1. Wild boar
  2. Street dog
  3. Pufferfish
  4. Indian red scorpion
  5. Asian tiger mosquito
  6. Common krait

Let’s Fight:

  1. Wolf
  2. Stonefish
  3. Malayan porcupine
  4. Sloth bear
  5. Gibbon
  6. Snow leopard
  7. Tarantula

The courageous and the ruthless:

  1. Honeybadger
  2. Russel’s viper
  3. Triggerfish
  4. Macaque
  5. Yak
  6. Blue-ringed octopus

The giant:

  1. Giant moray eel
  2. Gaur
  3. Banded sea krait
  4. Asian forest scorpion
  5. Gharial
  6. Billfish
  7. Asian giant hornet

Fearsome Finalists:

  1. Komodo dragon
  2. Asian giant hornet
  3. Sloth bear
  4. Asian tiger mosquito
  5. Leopard
  6. Tiger
  7. Asian elephant
  8. Indian cobra
  9. Saltwater crocodile
  10. Russell’s viper
  11. Box jellyfish

·  Top 10 Dangerous Animals of Australia:

The 10 most dangerous animals of Australia include:

  1. Box Jellyfish
  2. Taipan Snake
  3. Saltwater crocodile
  4. Blue-Ringed Octopus
  5. Stonefish
  6. Redback Spider
  7. Brown Snake
  8. Tiger Snake
  9. Great White Shark
  10. Sydney Funnel-Web Spider.

· Top 10 Dangerous Animals in Japan:

  1. Asiatic Black Bears
  2. Ussuri Brown Bears
  3. Japanese Wild Boar
  4. Japanese Mamushi
  5. The Habu
  6. Giant Centipede
  7. Redback Spiders
  8. Japanese Hornets
  9. Mosquitos
  10. Japanese Mountain Leech

·  Top 10 Dangerous Animals in Africa:

  1. Puff Adder
  2. Mosquito
  3. Hippopotamus
  4. Lion
  5. Crocodile
  6. Buffalo
  7. Elephant
  8. Rhinoceros
  9. Black Mamba
  10. Great White Shark

Which animal scares you the most? Do you have your own list of the top 10 dangerous animals in the world that horrify you? Well, sarcastically the top 10 dangerous animals in the world are tiny in size but can be huge in destruction, so size does not matter.

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