The 15 most poisonous animals in the world - yes, therapy helps! (2023)


There are many people who experience fears or phobias towards different animals or insects; for example, arachnophobia or spider phobia. Sometimes, this fear is produced by the appearance of some of these specimens, such as their large teeth or their strange appearance.

However, there are animals that we should fear and from which we should flee as soon as possible, because its poison can be lethal . Animals that apparently could be harmless, but that hide toxins capable of producing an agonizing death.

  • Related article: "The 10 most intelligent animals that exist"

The most poisonous animals in the world

But what are these dreaded species? Below you can find a list with the 15 most poisonous animals in the world .


  • Maybe you're interested: "Animal intelligence: the theories of Thorndike and Köhler"

15. Sea snake with beak

Generally, when we think of a snake, we imagine the typical terrestrial reptiles like the cobra or the python. But nevertheless, there are also marine snakes that are capable of ending the lives of humans in a matter of minutes; for example, the sea snake peak or "Enhydrina schistosa", which is found in Southeast Asian waters.

It can measure up to 1.5m , and it feeds mainly on catfish, although it can also eat balloon fish and occasionally other fish or squid species. With only 1.5 milligrams of poison can kill a person. This species can kill humans frequently when coming into contact with fishing nets.


14. Black widow

The black widow is one of the most popular spiders and they are most famous for their danger. It belongs to the genre Latrodectus, which contains 31 species recognized as poisonous spiders, this being the most deadly. These spiders receive this name because after mating they eat the male . In some cases it manages to escape.

Black widows tend to be very lonely, cannibalistic and nocturnal spiders. They only show social interest when they mate, although later they kill the male. Its poison paralyzes the central nervous system and it produces intense muscular pains. There is an antidote called Aracmyn that neutralizes the poison in 15 minutes.

13. Spider of Sidney

Sidney's spider is one of the deadliest in the world. It has large fangs and sacs full of poison . The males grow up to 25 mm long while the females grow up to 35 mm. They are considered to be one of the most poisonous species on the planet, and their sting causes hyperthermia and acute fever, severe muscle pain and cardiorespiratory arrest that causes the death of the victim.


12. Spider armadeira

The armadeira spider or Brazilian wandering spider (or banana tree) is one of the most poisonous in the world. It is a fairly large arachnid species. It is also very aggressive, and while most spiders flee when confronted by a predator, this plant faces its enemies. It is found in South America, specifically in Brazil, and his bite is lethal, causing tachycardia, muscle pain, nausea and vomiting , sweating, blurred vision ... You can kill in less than half an hour.

11. Marble shell snail

Few can think that a snail is capable of killing, but the venom of the shell conch is one of the most lethal. It is found mainly in the Indian Ocean, and a drop of venom from this snail can kill up to 20 adult humans. He usually uses his venom to catch his prey and rarely has contact with humans. The poison can cause loss of coordination, difficulty breathing, heart failure, double vision, coma or death . there is no antidote against his sting

10. Cobra real

The cobra is one of the best-known snakes, largely because of its characteristic posture when placed in attack position, and reaches a great height. It is native to Asia, specifically Thailand. It is one of the largest poisonous snakes, and your bite contains a lot of neurotoxins, and it is very painful . In addition, its size makes these reptiles bite at a great distance.

9. Balloon fish

The puffer fish It may seem harmless, but it is very dangerous . It is found in the waters around Japan, China and the Philippines and Mexico, and contains a toxin known as tetrodotoxin that produces a series of effects for people: nausea, headache, speech and coordination problems, seizures, paralysis, arrhythmia heart disease and even death. The pufferfish, despite being poisonous, is also edible.

8. Arrowhead frog

Frogs are animals that do not seem to kill a human being. Some of these frogs also have bright colors, so they are really exotic. But far from this pleasant image, they also contain toxins . This type of frogs inhabit South and Central America, and the poison secreted by their glands is called batrachotoxin, a toxin that blocks nerve signals to the muscles, causing paralysis and death.

7. Snake of Taipan

Snakes are one of the most feared animals, because many of these reptiles are poisonous. One of the most dangerous is the Taipan snake, because its toxins are lethal. Lives in Australia , and your bite can kill a person in less than 45 minutes. Luckily, it has an antidote.

6. Black Mamba

Another snake on this list, and the deadliest. The black mamba is found in Africa and usually measures around two and a half meters , although some specimens can reach four meters. The inside of his mouth is black, that's why he gets this name. It is the fastest snake on the planet, and can reach speeds of 20 km / h.

5. Stone fish

The stone fish is one of the strangest fish, and a species with which people should be careful. It camouflages at the bottom of the sea and can be confused with rocks. Its toxins cause swelling, paralysis and death . There is an antidote for this substance, but it is necessary to act quickly.

4. Death worm

The death worm is a caterpillar called lonomia obliqua, which is in Brazil, although it can be found in other areas of the Amazon. Cases have also been reported in Argentina. When a person comes into contact with the caterpillar, the discomfort begins, similar to that of food poisoning, followed by a severe headache . At 8 o'clock it is possible to notice the presence of bruises, and on days the person dies due to internal hemorrhages.

3. Octopus with blue rings

This animal does not have a large size, it measures just like a golf ball. But this tiny octopus is very poisonous, and it's practically of the deadliest species that we can find in the sea . They are found in Australia, Japan, Indonesia, the Philippines and New Guinea. The venom of this animal can cause blindness, nausea, paralysis and respiratory failure, as well as death.

2. Sea wasp

The sea wasp has nothing to do with the terrestrial wasp. It is a huge jellyfish which can reach up to 3 m in length and weigh 2 kg. It has between 40 and 60 tentacles full of poison that are capable of killing the lives of individuals that cross their path. It lives in the Australian waters.

1. Golden dart frog

The most poisonous animal in the world is the golden dart frog . It has a peculiar and attractive color, but the minimum contact with this frog can cause death. In fact, there is no need for the amphibian to be present, since the toxin is still active outside. Cases of dead dogs have been reported after coming into contact with some surface on which the frog had perched. It can produce up to 28 grams of poison through the skin, capable of killing 1500 people.


15 Most Poisonous Animals on Earth (December 2022).


Top Articles
Latest Posts
Article information

Author: Nathanael Baumbach

Last Updated: 02/16/2023

Views: 5937

Rating: 4.4 / 5 (55 voted)

Reviews: 94% of readers found this page helpful

Author information

Name: Nathanael Baumbach

Birthday: 1998-12-02

Address: Apt. 829 751 Glover View, West Orlando, IN 22436

Phone: +901025288581

Job: Internal IT Coordinator

Hobby: Gunsmithing, Motor sports, Flying, Skiing, Hooping, Lego building, Ice skating

Introduction: My name is Nathanael Baumbach, I am a fantastic, nice, victorious, brave, healthy, cute, glorious person who loves writing and wants to share my knowledge and understanding with you.