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Arizona bark scorpion - This scorpion is very common in North America, especially in Arizona. Its bite causes breathing difficulties and muscular convulsions. Although it is rarely fatal, symptoms can last up to 72 hours!

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Armed spider - Found in banana leaves, these spiders have an extremely aggressive behavior and are quite poisonous to humans. Their venom can cause extreme pain, salivation, irregular heart rate, and painful erections.

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Golden poison frog - This frog is one of the most toxic animals on Earth. At only five centimeters, this species has enough venom to kill an adult human.

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Golden poison frog - Found in Colombia, the venom of the golden poison frog is as lethal as it is painful. Local indigenous tribes use it on their arrows to make sure they kill their targets.

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Black widow - The black widow is one of the world's best-known spiders. If you're bitten by a smaller one, you may not feel great changes in your body because there's not a lot of venom.

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Black widow - But if you're stung by a larger black widow, you will experience such intense muscle contractions that they seem to last forever.

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Sweat bees - The sweat bee has a metallic appearance and is common in some urban areas. Its sting is painful and gives a burning sensation.

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European hornet - European hornets have stings similar to those of common bees, with the bonus of giving a significantly greater burning sensation.

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Acacia ant - Found in Central America, this ant species is not lethal, but if you are unlucky enough to be bitten by one, you will experience pain. Many people describe it as a staple piercing the skin at high speed.

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Western honey bee - The honey bee sting should not be taken lightly. It's very painful and the toxic mixture released by the sting restricts blood vessels.

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Red imported fire ant - The problem with fire ants is that they're never alone. They attack in groups and bites can be quite toxic and, in rare cases, even be lethal.

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Vespula germanica - It is one of the most aggressive wasps in the world and has a frightening attacking technique. In addition to its painful sting, the wasp leaves a scent on its victim so that other wasps can also attack it.

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Hobo spider - This spider's bite is still being studied and debated, however, the pain and the horrendous wounds it causes are certainly among the worst in the world.

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Japanese giant hornet - The sting of this wasp may cause various allergic reactions due to a strong toxin. This hornet is the number one cause of death by an animal in Japan, and according to some people who have managed to survive an attack, describe the sting as a hot nail piercing the skin.

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Bald-faced hornet - If you encounter this type of wasp, try not to be hostile towards it. Its sting is described as something similar to having a hand crushed by a door.

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Box jellyfish - These jellyfish are seen as one of the most dangerous animals in the oceans. The great danger of this species, in addition to its extremely toxic poison, is that they are almost invisible in the water.

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Manta ray - While not typically dangerous to humans, they will not hesitate to use their barbs. In addition to containing poison, victims often need surgery to get them removed.

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Asian giant hornet or Yellow jacket? - The sting of this wasp scores high in the Schmidt sting pain index. In addition to causing a burning sensation, it's often described as a paper cut mixed with acid.

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Giant centipede - Found in the Amazon rain forest, this centipede's bite is strong enough to kill bats and mice. In people, although rarely fatal, it can be painful and will leave you with a burning sensation for a long time.

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Red ant - These ants are very territorial. When they attack, their bite has been described as someone digging into the flesh with a nail.

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Spider wasp - It may seem harmless, but the sting of this wasp is completely devastating. It's seen as one of the worst in the world, and it's just not considered the worst because the pain only lasts a few minutes.

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Gila monster - Natives of the southwestern United States, these colorful lizards not only have one of the most toxic bites in the world, but also one of the most painful ones as well.

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Gila monster - Their jaws do not have enough musculature to ensure the poison is injected, so they use their extremely sharp teeth to make sure all the venom is pumped into the prey. Fortunately, this creature has nothing against humans and is generally docile, as long as it does not feel threatened.

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Platypus - This animal may seem friendly at first glance, however, we advise you not to approach it. Males of this species have on their hind legs poisonous spores capable of debilitating an adult human with a high degree of pain. The pain is so acute that it can last for weeks or even months after the initial wound.

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Viper - The viper has one of the most painful bites in the animal world. Although not often fatal, it is extremely painful.

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Viper - Several people report feeling a burning sensation for almost three days in the area of the bite.

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Stonefish - This is the most poisonous fish in the world. This description alone should suffice. How painful and fatal can this fish be?

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Stonefish - Australian aborigines perform dance rituals where they interpret the pain of a person who has been bitten by one of these fish.

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Bullet ant - The world's most agonizing bite belongs to the bullet ant. It may look like a normal ant, but it certainly isn't!

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Bullet ant -

Those who have had the misfortune of being bitten by one report that it's like being hit by a bullet!

See also: The most painful ways to die (according to science)

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