1. King cobra
   Stephens's banded snake
2. Tiger snake
   Caspian cobra

Although it is one of the most iconic snakes to have the title of "cobra," the king cobra is not actually a part of the genus Naja. The king cobra also holds the distinction of being the world's longest venomous snake species and on average they can reach up to 13 feet long.

1. Russell's viper
   Saw-scaled viper
2. Black-banded sea krait
   Jameson's mamba

As its name suggests, the black-banded sea krait spends most of its time underwater, venturing on land only to lay eggs. In some of the regions where it makes its home, this snake is simply referred to as the Chinese sea snake.

1. Monocled cobra
   Clarence river snake
2. Western green mamba
   Boomslang

The western green mamba is a relatively nimble species of snake that is more at home in trees than on the ground. While its venom is extremely fast-acting and deadly, interaction between this snake and humans is rare because of its relatively shy nature.

1. Black-necked spitting cobra
   Spectacled cobra
2. Speckled brown snake
   Blue krait

The spectacled cobra is also widely known as the Indian cobra, a name that is a direct reference to the Indian subcontinent where it primarily makes its home. It is notable for being one of the most significant animals in Indian mythology.

1. Beaked sea snake
   Blue-bellied black snake
2. Atlantic bushmaster
   Dubois' sea snake

The beaked sea snake is notably responsible for well over half of all sea snake bites in the world. This relatively aggressive elapid is also known as the common sea snake in some regions.

1. Banded krait
   Eyelash viper
2. Collett's snake
   Mexican west coast rattlesnake

The banded krait gets its name from its prominent coloration, which features alternating black and yellow bands. The length of the banded krait averages between 4 feet 10 inches to 6 feet 11 inches, making it one of the longest kraits in the world.

1. Cape cobra
   Mulga snake
2. Coral snake
   Tiger rattlesnake

The tiger rattlesnake gets its name from the striped pattern that covers its entire body. Its native habitat straddles the border between the United States and Mexico, specifically in Arizona and Sonora.

1. Coastal taipan
   Red-bellied black snake
2. Eastern green mamba
   Cottonmouth

Like its cousin, the western green mamba, the eastern green mamba spends most of its time in trees. Although it is fast and can chase down prey, the eastern green mamba is not usually an active hunter, preferring to lie in wait to ambush its prey.

1. Northern Philippine cobra
   Horned viper
2. Copperhead
   Inland taipan

As its name suggests, the inland taipan has a geographical range that spans the inland regions of central-east Australia. It holds the distinction of being the most venomous snake in the world; however, its relatively shy nature means it is not considered to be the most dangerous.

1. Ring-necked snake
   Pigmy rattlesnake
2. Coral snake
   Taiwanese krait

The Taiwanese krait is a venomous snake that makes its home in the marshy ares of Southeast Asia and southern China. The Taiwanese krait is also known in some regions as the Chinese krait or the many-banded krait.

1. Mottled rock rattlesnake
   Indian krait
2. Golden lancehead
   Small-scaled burrowing asp

The Indian krait is a species of snake that is prevalent throughout the Indian subcontinent, a fact that has often led to it being simply referred to as the common krait. In India, there are four snake species that are responsible for the vast majority of snakebites on humans and the common krait is without a doubt the most prevalent offender.

1. Annulated sea snake
   Jararaca
2. Malayan pit viper
   Ring-necked snake

The annulated sea snake is a species of aquatic snake that makes its home throughout the Indian Ocean and also throughout the waters of the Western Pacific Ocean. It primarily makes its home in somewhat shallow coastal waters, where it feeds on invertebrates, eels, and other relatively small fish.

1. Mainland tiger snake
   Common lancehead
2. Rinkhals
   Puff adder

The rinkhals is a species of venomous snake that makes its home in the southern reaches of Africa. While the rinkhals is not actually a true cobra it is often referred to as the ring-necked spitting cobra because of its appearance.

1. Gaboon viper
   Dugite
2. Mamushi
   Yellow snake

Dugites are not particularly aggressive around humans; however, they are often found living close to human settlements. The dugite's venom can be fatal to humans, with victims experiencing swelling, intense pain, and eventually death if the bite is left untreated.

1. Fea's viper
   Corn snake
2. Sidewinder rattlesnake
   Black mamba

Fea's viper is often thought to be one of the most primitive vipers that is still alive to this day. It can be found throughout Southeast Asia, primarily in Tibet, Vietnam, and Southern China.

1. Congo water cobra
   Wagler's pit viper
2. Common night adder
   Mojave rattlesnake

While the Mojave rattlesnake shares its name with the Mojave Desert in California, its range extends further south into a large portion of Mexico as well. It holds the distinction of having the most potent rattlesnake venom in the world.

1. Eastern brown snake
   Jararacussu
2. Forest cobra
   Common European adder

The forest cobras can reach up to 10 feet in length, a fact that makes it the longest true cobra in the world. It is notably the 4th most venomous species of cobra in the world, having venom that can cause death within half-an-hour to two hours.

1. Lowlands copperhead
   White-lipped pit viper
2. Olive-brown sea snake
   Western diamondback

As its name suggests, the olive-brown sea snake has adapted to be able to live underwater, only surfacing on occasion to breathe. Its diet primarily consists of fish eggs, fish, and crustaceans.

1. Banded water cobra
   Boomslang
2. Chinese cobra
   Sharp nosed viper

While it can sometimes be seen in some parts of Southeast Asia, the Chinese cobra primarily makes its home in southeastern China and Taiwan. The venom of the Chinese cobra can be fatal if left untreated; however, the appropriate antivenom is readily available in many areas.

1. Eastern coralsnake
   Diamondback water snake
2. Red diamond rattlesnake
   Death adder

The eastern coral snake makes its home in the southeastern reaches of the US, with a range that covers all of Florida and parts of the adjoining states. It is oftentimes referred to as the American cobra, even though it is not considered a true cobra.

1. Eastern coralsnake
   Red diamond rattlesnake
2. Eastern diamondback
   Common death adder

The common death adder makes its home in the eastern and southern reaches of Australia. It is not an active hunter, it instead prefers to wait and ambush passing prey.

1. Boomslang
   Elegant sea snake
2. Sharp-nosed viper
   Chinese cobra

This aquatic snake species makes its home in relatively shallow waters off the coast of Australia. On average they can grow to a length of about 6 and a half feet, but one was found to be over 8 feet long.

1. White-lipped pit viper
   Lowland Copperhead
2. Western diamondback
   Olive-brown sea snake

The lowland copperhead can pose a significant threat to human life if it feels threatened, since its venom can potentially cause death if left untreated for even a short amount of time. The lowland copperhead is primarily found in Tasmania and the southeastern reaches of the Australian mainland.

1. Eastern brown snake
   Common European adder
2. Jararacussu
   Forest cobra

Although it may look unassuming with its relatively dull appearance, the eastern brown snake is the runner-up for most venomous land snake. In addition, records have shown that it is the culprit behind over half of Australia's snake-bite deaths.

1. Mojave rattlesnake
   Common night adder
2. Wagler's pit viper
   Congo water cobra

As its name suggests, the Congo water cobra is well adapted to functioning in water and can usually be found hiding under bridges or among rocks. Its secondary name, Christy's water cobra, is a direct reference to the English zoologist Dr. Cuthbert Christy.

1. Fea's viper
   Sidewinder rattlesnake
2. Black mamba
   Levantine viper

The black mamba is a Sub-Saharan snake that has a notorious reputation in the area because of both its size and its toxicity. This African snake holds the distinction of being the runner-up for longest venomous snake in the world, being beat only by the king cobra.

1. Okinawa habu
   Mamushi
2. Central African gaboon viper
   Western brown snake

The western brown snake is one of the most common snakes in Australia and it can be found throughout most of the country's regions. Although it is most at home in arid locations in the wild, the western brown snake can also sometimes be found living in urban areas as well.

1. Mainland tiger snake
   Puff adder
2. Common lancehead
   Rinkhals

The mainland tiger snake primarily makes its home in Australia's southern reaches, around wetlands and coastal regions. The name of this extremely venomous snake species is a reference to its banded coloration that somewhat resemble the stripes of a tiger.

1. Indian python
   Malayan pit viper
2. Jararaca
   Yellowbelly sea snake

While most snakes lay eggs when reproducing, female yellowbelly sea snakes actually go against this norm and keep the eggs within their bodies and bear live young. The range of this snake is quite extensive, being found in all tropical waters around the world except for the Atlantic Ocean.

1. Mottled rock rattlesnake
   Indochinese spitting cobra
2. Small-scaled burrowing asp
   Indian krait

The Indochinese spitting cobra is a deadly venomous snake that makes its home in Southeast Asia. Its first method of attacking is usually to try and spit venom at its foe, if this fails then it will then try to bite in order to envenom its target.

1. Pigmy rattlesnake
   Saw-scaled viper
2. Timber rattlesnake
   Taiwanese krait

The range of the saw-scaled viper extends from the Middle East all the way throughout the Indian subcontinent. It is also notable for being a member of the "big four" snake group, which is the group of snakes that causes the most snake bites (on humans) in the Indian subcontinent.

1. Northern Philippine cobra
   Copperhead
2. Horned viper
   Inland taipan

The name of this snake describes its geographical distribution perfectly, as it can only be found in the most northerly reaches of the Philippines. The Philippine cobra is extremely venomous and is capable of spitting its venom at its adversaries at high speeds.

1. Eastern green mamba
   Red-bellied black snake
2. Coastal taipan
   Cottonmouth

The coastal taipan makes its home in warm coastal areas throughout the southern portion of New Guinea, as well as the eastern and northern reaches of Australia. When ranking the most venomous land snakes, the coastal taipan comes in third behind the inland taipan and eastern brown snake.

1. Banded krait
   Eyelash viper
2. Collett's snake
   Mexican west coast rattlesnake

As its name suggests, the primary geographic range of this snake stretches across a large portion of Mexico's west coast. The scientific name of the Mexican west coast rattlesnake (basiliscus) is a direct reference to the massive mythological serpent king, the basilisk.

1. Dubois' sea snake
   Atlantic bushmaster
2. Blue-bellied black snake
   Timber rattlesnake

One of the most notable things about the Dubois' sea snake is the fact that it holds the title of most venomous sea snake in the world. As a direct reference to its preferred habitat, this snake is sometimes referred to as the reef shallows sea snake.

1. Black-necked spitting cobra
   Speckled brown snake
2. Green anaconda
   Spectacled cobra

The speckled brown snake has a relatively limited geographical range that primarily encompasses a significant portion of the northeastern reaches of Australia. It has, however, been known to leave its native area on occasion, and has been seen in Queensland and even as far south as South Australia.

1. Desert horned viper
   African puff adder
2. Russell's viper
   Spiny bush viper

Russell's viper is native to the Indian subcontinent and most of the adjoining areas (like Southern China and parts of Southeast Asia). Its name is a direct reference to the notable Scottish herpetologist Patrick Russell.

1. Aquatic garter snake
   Tiger rattlesnake
2. Mulga snake
   Cape cobra

Its name is a reference to the fact that it is largely native to the capes of South Africa (namely the Northern Cape, Western Cape, and Eastern Cape). The Cape Cobra primarily prefers to inhabit arid locations like deserts and savannas; however, it can be found in forested areas as well.

1. Indian python
   Monocled cobra
2. Clarence river snake
   Western green mamba

The monocled cobra is relatively abundant in its natural habitat and it is one of the many diverse species of cobra that can be found in South and Southeast Asia. They are often hunted for their skins, but they are still not in any danger of being endangered.

1. Caspian cobra
   Black rat snake
2. Stephens's banded snake
   King cobra

Like many cobras, the Caspian cobra will generally try to avoid humans; however, it is notable for being quick to anger and very aggressive if it feels even somewhat threatened. The range of this venomous snake extends across the northern reaches of the Indian subcontinent and a significant portion of central Asia.