• The 24-36 inch copperhead is responsible for approx. 35 % of all venomous bites in USA. Read More
  • Cottonmouth snakes forage by ambushing their prey, and will avoid humans at all costs. Read More
  • The average death rate from krait bites in Asia is 7 %. It is highly feared in India. Read More
  • The puff adder can strike with lightning speed and most of its victims are from Africa. Read More
  • Cobra's are the largest and deadliest snakes in the world. Read More
  • Known by its triangular head. The venom from the Russel's viper causes renal failure within hours.
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  • The coral snake is not as dangerous as people think and fatalities are uncommon.
    Read More
  • The gaboon is a rather calm snake, but deaths from its venom occur fast.
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  • Lancehead snakes accounts for approx. 90 % of all snake envenomations in South America.
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  • The rattlesnakes rattle is composed of scales. Amputations from its bite are common.
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  • The taipan snake has the lowest LD50-value of all snakes. 0.030 mg/kg can kill 50 people.
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  • Bushmasters are the largest vipers and lengths of 6 feet are common.
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  • The black mamba is largest and deadliest snake of Africa. Most, but not all, survive its bite.
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  • Fangs of sea snakes are mostly to short to penetrate human skin. Related to Cobras!
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  • Tiger snakes are roaming around Australia, including islands such as Tasmania.
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  • The death adder can attract prey by wiggling its tail. Its venom is slow to take effect.
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  • The boomslang is long and slender perfectly camouflaged African snake.
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  • Burrowings asps have the longest fangs relative to their head size of any snakes.
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  • The Moorish viper is the largest viper in Africa. It has a zig-zag pattern on its body.
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  • The horned viper is a typical ambusher. Usually, its bite is not deadly.
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  • The night adder is responsible for most venomous snake bites in Africa - it is not deadly.
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  • The most common types of antivenom and how it is produced and used.
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  • Read about people who has survived snake bites and see how bites affected them.
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  • See annotated videos of venomous snakes from around the world.
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  • See annotated images of venomous snakes from around the world.
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  • How did snakes evolve and how is the geological record of snakes.
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  • See a top 5 list of the most venomous snakes in the world.
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Drawings are ©

Fer de Lance: Limb Amputations From Mexico to Argentina

By Anders Nielsen, Ph.d.

Lancehead snakes are good at adapting to many different conditions. Therefore, they are often found in close proximity to humans. That is, they have no problems moving into land cleared for agriculture and cities.

Links: Krait



This is also the reason why they are responsible for so many snake bite envenomations. According to Venomous Snakes of the World by Mark O'Shea, they account for approximately 90 percent of all venomous snake bites in South America.

The highest density is found in the Amazon region. They are agile animals and not mellow. So this really is a snake you have to careful of when you encounter it.

Links: Cobra

Puff adder

Russel's viper

There are up to 30 lancehead species. In many countries, there are several species that are often confused with one another. They are one the longest of the venomous snakes, as most specimens reach lengths close to 8 feet, which is large. The length, of course, depends on which lancehead snake it is.

Their Latin name is Bothrops, and the different species are called Botrops spp., where the spp is different names. The two most common lanceheads are the Bothrops atrox and Bothrops asper, the asper being the largest of the two.

Links: Gaboon

Coral snake


The photo below is a Botrhops atrox, while the video is a guy being stupid with a highly venomous Fer de Lance in Costa Rica. He is not aware of the danger he subjects himself to when he allows the snake to attack him.

Copperhead snake

The asper Fer De Lance also goes under the name terciopelo. It is known to be very aggressive, and it is a large and strong-bodied snake..

Although they are not called Fer de Lance snakes or lanceheads, a number of South American species are closely related to the Fer de Lance. Those are called Bothreichis. They are pitvipers and not nearly as dangerous as Fer de Lance snakes, although very close related.


Like most other snakes, their diet is a combination of smaller mammals (rodents), birds, and other reptiles.

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