7 Types of Snakes: Venomous, Nonvenomous and Constrictors

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The black mamba, one of the world’s most feared snakes, can strike multiple times in rapid succession, delivering enough venom to kill multiple humans within minutes. This is just one of the many reasons snakes are among the most fascinating creatures on Earth.

From venomous vipers to massive pythons, many types of snakes have adapted to diverse environments. Some are masters of camouflage, blending seamlessly into their surroundings, while others sport bright colors, warning predators of their dangerous bite.

Let's take a closer look at these slithering serpents and the intriguing traits that make them some of nature's most extraordinary creatures.

1. The Mighty Anacondas of the Amazon Anacondas are the giants of the snake world, known for their immense size and aquatic prowess. Reaching lengths of up to 30 feet (9.14 meters) and weighing over 550 pounds (about 250 kilograms), these serpentine behemoths dominate the waters of South America’s Amazon and Orinoco basins.

Their olive-green bodies, dotted with black patches, provide perfect camouflage in their swampy habitats. Masters of stealth, anacondas have eyes and nostrils positioned on top of their heads, allowing them to remain mostly submerged while stalking prey.

These particular snakes don’t rely on venom; instead, they use their immense muscle power to constrict and suffocate their prey, ranging from fish and birds to larger animals like caimans and capybaras.

Anaconda Species There are four distinct anaconda species, each with its own unique characteristics and habitats across South America.

Bolivian anaconda ( Eunectes beniensis ) : Found primarily in Bolivia’s Beni province, this species is closely related to the green anaconda but is smaller, typically reaching 10 to 13 feet (3 to 4 meters). Due to the remote nature of its habitat, it remains less studied, and its behavior and population status are not well understood.

Dark-spotted anaconda ( Eunectes deschauenseei ) : Native to northeastern South America, particularly in Brazil and French Guiana, this species can reach up to 10 feet (3 meters) in length. Its dark-olive body with distinctive spots provides excellent camouflage as it hunts fish, birds and small mammals in its swampy and forested habitats.

Green anaconda ( Eunectes murinus ) : The largest and heaviest snake in the world, the green anaconda can grow up to 30 feet (9.14 meters) long and weigh up to 550 pounds (about 250 kilograms). It is found in the Amazon Basin and other parts of South America.

Yellow anaconda ( Eunectes notaeus ) : Found in the wetlands of Paraguay, Bolivia and Argentina, this species typically grows to 10 to 15 feet (3 to 4.5 meters) in length. It has a yellowish-brown body covered in dark blotches and preys on smaller mammals, birds and fish, often residing in aquatic environments like marshes and swamps.

2. Boas Unwrapped: The Squeeze Masters of the Wild Boas are nonvenomous constrictors that squeeze their prey with precision. Found across the Americas, Africa and parts of Europe, boas come in various sizes, from the petite rosy boa to the hefty anaconda’s cousin, the boa constrictor, which could wrap around a small tree (and does, just for fun).

Their scales are often a mix of earth tones, helping them blend in as they lounge in trees or slither through the underbrush. Boas are also famously adaptable, thriving in environments from rainforests to deserts.

Boa Species Several species of boas exist, each with distinctive traits and habitats, ranging from the dense jungles of the Amazon to the arid deserts of Central America. Here are three of the most common boas.

Common boa ( Boa constrictor imperator ) : Native to Central America and parts of northern South America, this species is one of the most popular boas kept as pets. It typically reaches 6 to 10 feet (1.8 to 3 meters) in length, exhibits a wide range of color variations, and adapts well to diverse habitats, including forests and agricultural areas.

Cuban boa ( Chilabothrus angulifer ) : Endemic to Cuba, this large boa can exceed 15 feet (4.6 meters) in length. Primarily arboreal, it feeds on birds, small mammals and occasionally other reptiles, often residing in forests and rocky areas.

Red-tailed boa ( Boa constrictor constrictor ) : Found in the Amazon Basin and throughout South America, this species is distinguished by its reddish tail markings. It can grow up to 13 feet (4 meters) long and is commonly found in rainforests, where it preys on various animals, including rodents, birds and small mammals.

3. Cobras: The Iconic Hooded Serpents Cobras are known for their flair and a hood that flares out like a villain’s cape in a classic movie. When they feel threatened, they don’t just slither away; they rise, spread that hood and give you the snake equivalent of a death stare.

These venomous snakes — found in Africa and Asia — pack a potent punch with their bite. Some species, like the spitting cobras, even take it a step further by shooting venom straight at your eyes. Talk about a defensive strategy.

Cobra Species Several species of cobras are renowned for their iconic hoods, potent venom and diverse habitats across Africa and Asia.

Cape cobra ( Naja nivea ) : Native to southern Africa, this highly venomous cobra is known for its varying coloration, ranging from yellow to brown to black. It can grow up to 6 feet (1.8 meters) in length and is often found in arid and semiarid regions.

Egyptian cobra ( Naja haje ) : Found in North Africa and parts of the Middle East, this cobra can reach lengths of up to 8 feet (2.4 meters). It is known for its iconic hood and threatening stance and is often associated with ancient Egyptian culture.

Indian cobra ( Naja naja ) : Widespread across the Indian subcontinent, this species is famous for its hood and distinctive "spectacle" pattern. It typically grows to about 5 to 6 feet (1.5 to 1.8 meters) and is highly revered in Indian mythology.

King cobra ( Ophiophagus hannah ) : As the world’s longest venomous snake, the king cobra can reach lengths of up to 18 feet (5.5 meters). Unlike other cobras, it belongs to its own genus, Ophiophagus, and is known for its intelligence, ability to stand upright and a diet that primarily consists of other snakes.

Monocled cobra ( Naja kaouthia ) : Found in South and Southeast Asia, this species is named for the circular, monocle-like marking on the back of its hood. It can grow up to 7 feet (2.1 meters) long and is known for its potent venom.

Spitting cobra ( Naja nigricollis ) : Native to Sub-Saharan Africa, this cobra is unique for its ability to "spit" venom at the eyes of potential threats. It usually grows to about 4 to 7 feet (1.2 to 2.1 meters) and displays a wide range of colors, from brown to black.

4. Meet the Mambas: Africa's Swift and Deadly Serpents Mambas are sleek, fast and highly venomous, making them some of the most formidable snakes in Africa. Their smooth, agile bodies can move quickly through trees or across the ground, striking fear into the hearts of those who encounter them.

Mambas don’t just rely on their venom; they also have a reputation for being highly alert and quick to react to threats. Though they tend to avoid humans, they won’t hesitate to defend themselves if cornered.

Mamba Species The various mamba species are known for their exceptional speed, deadly venom and distinct characteristics shaped by Africa’s diverse environments.

Black mamba ( Dendroaspis polylepis ) : The largest and most feared mamba, this serpent can reach up to 14 feet (4.3 meters) and lives in Sub-Saharan Africa. Known for its speed and highly potent venom, this species is named for the black coloration inside its mouth.

Eastern green mamba ( Dendroaspis angusticeps ) : This tree-dwelling species found along the eastern coast of southern Africa typically grows to 6 to 7 feet (1.8 to 2.1 meters). The striking species' bright green color provides excellent camouflage in foliage.

Western green mamba ( Dendroaspis viridis ) : Found in West Africa, this species grows to about 6 to 8 feet (1.8 to 2.4 meters). Similar in appearance to the eastern green mamba, it’s known for its vibrant green color and arboreal lifestyle.

5. Powerful Pythons: Giants of the Reptile Kingdom Pythons are nonvenomous constrictors that use their powerful bodies to squeeze their prey, often taking down animals much larger than themselves. Found in Africa, Asia and Australia, these masters of ambush patiently wait for the perfect moment to strike.

The reticulated python holds the title for the world's longest snake, while the Burmese python is famous for its massive girth. Despite their formidable size, pythons are generally not aggressive toward humans and are often kept as pets, particularly the smaller species like the ball python.

Python Species Among the python species, each is known for its immense size, strength and unique adaptations to diverse habitats across Asia, Africa and Australia.

African rock python ( Python sebae ) : Found across Sub-Saharan Africa, this large python can grow up to 20 feet (6 meters). Known for its aggressive temperament and powerful constricting ability.

Ball python ( Python regius ) : Native to West and Central Africa, this small python typically grows to 3 to 5 feet (0.9 to 1.5 meters). It is popular as a pet due to its manageable size and docile nature.

Burmese python ( Python bivittatus ) : One of the largest python species, reaching lengths of up to 23 feet (7 meters). Native to Southeast Asia, it’s known for its striking pattern and invasive presence in Florida.

Indian python ( Python molurus ) : Native to the Indian subcontinent, this species can grow up to 20 feet (6 meters). Often found in forests, swamps and grasslands, this creature is known for its pale, yellowish color.

Reticulated python ( Malayopython reticulatus ) : The longest snake in the world, it can grow over 30 feet (9 meters). Native to Southeast Asia, it’s famous for its intricate, net-like pattern.

6. The Enigmatic Sea Snakes of the Oceans Sea snakes are the aquatic specialists of the snake family, perfectly adapted to life in the ocean. With their paddle-like tails and streamlined bodies, they glide effortlessly through the water, hunting fish and other marine creatures.

Unlike their land-dwelling cousins, sea snakes can spend long periods underwater, thanks to their ability to extract oxygen through their skin.

Found in the warm waters of the Indian and Pacific Oceans, these venomous snakes pack a potent bite, but they’re generally not aggressive and prefer to avoid humans. Their striking colors warn predators of their toxicity, a classic example of nature’s caution sign.

Sea Snake Species Sea snakes, with their unique adaptations for life in the ocean, include a variety of species known for their powerful venom and agile swimming abilities across tropical waters.

Beaked sea snake ( Hydrophis schistous ) : This species can grow up to 4 feet (1.2 meters) and is found in the coastal waters of the Indian Ocean and Southeast Asia. It is highly venomous and known for its distinctive beak-like snout.

Black-banded sea krait ( Laticauda semifasciata ) : Native to the waters around Southeast Asia and the western Pacific, this species is semiaquatic and typically grows to about 4 feet (1.2 meters). It has distinctive black bands and is less aggressive than most true sea snakes.

Blue-lipped sea krait ( Laticauda laticaudata ) : Found in the Indo-Pacific region, this highly venomous semi-aquatic species can reach lengths of up to 3.5 feet (1.1 meters). The Blue-lipped sea krait spends part of its life on land. It comes ashore to rest, digest food and lay eggs.

Olive sea snake ( Aipysurus laevis ) : Native to the coral reefs of northern Australia and New Guinea, this species typically grows to about 4 to 6 feet (1.2 to 1.8 meters). It is highly venomous and has a smooth, olive-colored body.

Yellow-bellied sea snake ( Hydrophis platurus ) : This species is widely distributed across the tropical waters of the Pacific and Indian Oceans and can grow to about 3 feet (0.9 meters). It is easily identified by its yellow belly and dark upper body and is known for its wide-ranging migratory behavior.

7. Venomous Vipers: Masters of Ambush and Stealth Vipers are the stealthy assassins of the snake world, equipped with long, hinged fangs that deliver a potent dose of venom. Found on every continent except Australia and Antarctica, vipers are masters of camouflage, blending into their surroundings as they wait to ambush prey.

With their stocky bodies and triangular heads, they strike quickly and decisively, often before their victim even knows what’s happening. The heat-sensing pits on their faces give them an edge in detecting warm-blooded prey, even in complete darkness.

Viper Species This deadly species is renowned for its potent venom, striking speed and specialized hunting techniques.

Gaboon viper ( Bitis gabonica ) : Native to the rainforests and savannas of central Africa, this species is known for its large size, reaching up to 6 feet (1.8 meters), and distinctive pattern. It has the longest fangs of any snake and a potent venom.

Puff adder ( Bitis arietans ) : This heavy-bodied viper is found throughout Africa and is known for its wide distribution and aggressive nature. It typically grows to about 3 to 5 feet (0.9 to 1.5 meters) and makes a distinctive puffing sound when threatened.

Russell's viper ( Daboia russelii ) : Common in South Asia, this highly venomous viper can grow up to 5.5 feet (1.7 meters). It is recognized by its chain-like pattern of oval shapes along its body and is responsible for many snakebite incidents.

Saw-scaled viper ( Echis carinatus ) : Found in parts of the Middle East, Africa and South Asia, this small but highly deadly viper typically grows to about 2 feet (0.6 meters). The serpent is known for the rasping sound it produces by rubbing its scales together.

Timber rattlesnake ( Crotalus horridus ) : Native to the eastern United States, this species is a member of the pit viper group within the viper family (Viperidae). It can grow up to 5 feet (1.5 meters) and is known for its distinctive rattle and patterned coloration, which provides camouflage in wooded environments.

We created this article in conjunction with AI technology, then made sure it was fact-checked and edited by a HowStuffWorks editor.

Original article: 7 Types of Snakes: Venomous, Nonvenomous and Constrictors

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