(Micrurus fulvius) | United States

Although they have an extremely potent venom, they are small, secretive, and relatively gentle.

(Vipera sp.) | Europe

These Vipers are not particularly toxic or dangerous - bites rarely, if ever, result in death.

(Crotalus horridus) | United States

Timber bites can be exceptionally bad with a relatively high percentage of fatality.

(Dispholidus typus) | Africa

Boomslangs have a very small venom yield and bites to people in the wild are almost unheard of, but they do have terrifyingly toxic venom.

(Enhydrina schistosa) | Asia

At one time this species was considered to have the deadliest venom of any snake. However, current research shows this not to be the case.

(Bungarus candidus) | Asia

50% of the bites from this snake are fatal even with the use of antivenom treatment.

(Crotalus viridis) | United States

This is the snake that accounts for the largest number of venomous snakebites in the US.

(Crotalus scutatus) | United States

This rattlesnake has one of the most toxic venoms of all the rattlesnakes.

(Oxyuranus microlepidotus) | Australia

The most toxic venom of any snake, maximum yield recorded (for one bite) is 110mg; enough to kill over 100 people or 250,000 mice. Watch a National Geographic video featuring our very own Terry Philip.

(Notechis scutatus) | Australia

The legendary Tiger Snake of Australia is a very aggressive snake with extremely toxic venom.

(Acanthophis antarcticus) | Australia

A dosage of 10mg of Death Adder venom is enough to kill a human. A good-sized Death Adder can deliver up to 180mg in a single bite.

(Pseudonaja textilis) | Australia

Its venom is reputed to be the second most toxic in the world. They cause the most snakebite deaths in Australia - 1/14,000 of an ounce of this venom is enough to kill a person.

(Crotalus atrox) | United States

A large snake with a higher than average venom yield and fang length, and an irascible disposition, although the venom is below average in toxicity.

(Naja naja ssp.) | Asia

Cobras are considered to be the most common venomous snake in the most densely populated part of the world, 40,000 people die from cobra bites each year in this region.

(Naja haje) | Africa

This is a large cobra with high toxicity, large venom glands, and a bad disposition.

(Bitis gabonica) | Africa

This species has enormous venom glands and the longest fangs of any snake in the world.

(Crotalus adamanteus) | United States

This is the largest venomous snake in the US. It has huge venom glands and relatively long fangs.

(Bothrops insularis) | Central/South America

Some researchers feel this snake has one of the deadliest of all snake venoms.

(Cascabel or Crotalus terrificus) | Central/South America

A very toxic venom, long fangs, and a fairly bad temperament.

(Naja melanolueca) | Africa

This is a common species prone to stand and fight with a toxic venom, large size, but relatively average fang length.

(Lachesis sp.) | Central/South America

A big snake with lots of toxic venom and very long fangs.

(Crotalus basiliscus) | Central/South America

This very large, heavy-bodied snake has huge amounts of highly toxic venom, long fangs, and a temperament that makes them scary.

(Echis carinatus) | Africa & Asia

Saw-Scaled Vipers kill more people in Africa than all the other venomous African snakes combined. According to some researchers it appears that humans are very susceptible to this snake’s venom - it could very well be the most venomous snake to humans!

(Pseudechis austalis) | Australia

One report states that the largest amount of venom ever extracted from a snake, 1300mg, came from a King Brown Snake.

(Dendroaspis polylepsis) | Africa

These snakes are large, alert, and aggressive in their personal defense - they are one of the most feared snakes on the African continent.

(Bothrops atrox) | Central/South America

These are large and very defensive snakes that have caused many bites.

(Ophiophagus hannah) | Asia

These are the largest of all venomous snakes and are highly intelligent. It is said they can produce enough venom in a bite to kill an elephant.

(Daboia species) | Asia

This snake is the leading cause of death in the country of Sri Lanka and on par with the common cobra for deaths in the rest of its range.

(Oxyuranus scutellatus) | Australia

The venom delivered in a single Taipan bite is enough to kill up to 12,000 guinea pigs. This is the largest venomous snake in Australia. Before antivenom was available 100% of bites were fatal.

(Bothrops asper) | Central/South America

These large aggressive snakes have long fangs, and lots of very toxic venom. Members of this genus are some of the only snakes that can, and regularly do, strike more than half their body length.

(Bitis arietans) | Africa

Many legs and arms need to be amputated due to the damage from this snake’s venom!

(Oxyuranus s. canni) | New Guinea

Venomous snakebite deaths are 100 times higher in New Guinea than in Australia due to quality and availability of treatment. They are similar to Australian coastal Taipans.