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Species library

Snake species guide

Detailed, photo-rich profiles of 41+ common snakes — how to identify each one, whether it's dangerous, where it lives, and the harmless look-alikes it's confused with.

Identify your snake by photo
Caution

Venomous snakes

Learn to recognize the dangerous species — and the harmless ones they mimic.

Detailed close-up of a venomous rattlesnake showing its intricate scale patterns and rattle.
Venomous

Eastern Diamondback Rattlesnake

Crotalus adamanteus

The largest venomous snake in North America and arguably the most dangerous. Its hemotoxic venom destroys tissue and blood cells, and a defensive bite is a medical emergency.

Danger 5/5
A snake peeks out from a vibrant green pot in an outdoor setting.
Venomous

Copperhead

Agkistrodon contortrix

Responsible for more venomous snakebites than any other US species, but its bite is rarely fatal. Excellent camouflage in leaf litter leads to surprise encounters.

Danger 3/5
Close-up of intertwined water snakes among dried reeds in their natural habitat.
Venomous

Cottonmouth (Water Moccasin)

Agkistrodon piscivorus

A semi-aquatic pit viper named for the white interior of its mouth, which it gapes as a warning. The only venomous water snake in North America.

Danger 4/5
Vibrant coral snake amidst fallen leaves in Amazonas, Brazil rainforest.
Venomous

Eastern Coral Snake

Micrurus fulvius

A relative of cobras with potent neurotoxic venom. Famous for the rhyme 'red touches yellow, kill a fellow' that separates it from harmless mimics.

Danger 5/5
Detailed close-up of a venomous rattlesnake showing its intricate scale patterns and rattle.
Venomous

Western Diamondback Rattlesnake

Crotalus atrox

The classic Western rattlesnake responsible for the most snakebite deaths in the US. Recognizable by the black-and-white 'coon tail' banding above the rattle.

Danger 5/5
Upward view of towering redwood trees in a lush forest, capturing nature's grandeur.
Venomous

Timber Rattlesnake

Crotalus horridus

A large forest rattlesnake of the eastern US with a calm temperament but highly potent venom. Often confused with the harmless Eastern Ratsnake.

Danger 4/5
A majestic King Cobra in its natural habitat, amidst lush greenery, showcasing its striking features.
Venomous

King Cobra

Ophiophagus hannah

The world's longest venomous snake. A single bite delivers enough neurotoxin to kill an elephant, yet it is generally shy and avoids humans.

Danger 5/5
Beware of rattlesnakes sign posted in a grassy area, cautioning travelers.
Venomous

Prairie Rattlesnake

Crotalus viridis

The classic rattlesnake of the Great Plains. Well-camouflaged in dry grass, with a potent venom that makes it the main medically significant snake across the central US.

Danger 4/5
Beware of rattlesnakes sign posted in a grassy area, cautioning travelers.
Venomous

Mojave Rattlesnake

Crotalus scutulatus

Often considered the most dangerous rattlesnake in the US because of its potent neurotoxic-plus-hemotoxic venom. Looks much like a diamondback but with subtle differences.

Danger 5/5
Beware of rattlesnakes sign posted in a grassy area, cautioning travelers.
Venomous

Pygmy Rattlesnake

Sistrurus miliarius

A small but venomous pit viper with a rattle so tiny it sounds like a buzzing insect. Bites are painful but rarely life-threatening due to the small venom yield.

Danger 2/5
Dramatic close-up of a snake with open mouth in a dark, forest-like setting.
Venomous

Black Mamba

Dendroaspis polylepis

Africa's most feared snake — fast, alert and armed with rapid-acting neurotoxic venom. The name comes from the inky-black inside of its mouth, not its body color.

Danger 5/5
Detailed shot of a snake in its natural habitat, showcasing its scales up close.
Venomous

Inland Taipan

Oxyuranus microlepidotus

Drop for drop, the most venomous land snake in the world. Despite this, it is shy and reclusive and bites on humans are extremely rare.

Danger 5/5
Close-up of an Eastern garter snake (Thamnophis sirtalis) on a textured tree branch.
Venomous

Eastern Brown Snake

Pseudonaja textilis

Responsible for more snakebite deaths in Australia than any other species. Fast, nervous and highly venomous, and common around farms and homes where mice are plentiful.

Danger 5/5
Indian cobra poised in sunlight, displaying iconic hood on dry grass.
Venomous

Indian Cobra

Naja naja

One of India's 'big four' snakes responsible for the most human deaths. Famous for the spectacle-shaped marking on the back of its spread hood.

Danger 5/5
Detailed close-up of a sidewinder snake camouflaged in sandy desert sand.
Venomous

Russell's Viper

Daboia russelii

One of the deadliest snakes in Asia and a member of India's 'big four.' Its loud hiss and chain-like pattern are warning signs of a potent, organ-damaging venom.

Danger 5/5
Detailed image of a Bothrops snake in the Brazilian rainforest, showcasing its scales and habitat.
Venomous

Saw-scaled Viper

Echis carinatus

Small but among the deadliest snakes on earth, thought to cause more human deaths than any other. It rasps a warning by rubbing its serrated scales together.

Danger 5/5
Close-up of a puff adder snake camouflaged in desert sand for wildlife photography.
Venomous

Puff Adder

Bitis arietans

Responsible for the most snakebite deaths in Africa — not because it is the most venomous, but because it is common, well-camouflaged and slow to move off paths.

Danger 5/5
Detailed close-up of a Gaboon viper camouflaged on dry leaves.
Venomous

Gaboon Viper

Bitis gabonica

A massive, ornately patterned forest viper with the longest fangs and one of the highest venom yields of any snake. Slow and placid, but a bite is catastrophic.

Danger 5/5
Closeup of small snake hiding in tall thick grass looking around while hunting
Venomous

Boomslang

Dispholidus typus

A slender, large-eyed tree snake with rear fangs and potent hemotoxic venom. Shy and reluctant to bite, but bites can be deadly with dangerously delayed symptoms.

Danger 4/5
Beneficial

Non-venomous & harmless snakes

Most snakes you'll meet are harmless and help control rodents and pests.

Captivating close-up of a corn snake being gently held, highlighting its vibrant scales.
Non-venomous

Corn Snake

Pantherophis guttatus

A harmless, beneficial constrictor and one of the most popular pet snakes in the world. Frequently mistaken for the venomous copperhead.

Danger 0/5
Black-and-white close-up of a snake in grass showcasing wildlife and natural detail.
Mildly venomous

Common Garter Snake

Thamnophis sirtalis

The most widespread snake in North America and the classic 'garden snake.' Technically has a very mild saliva toxin but is harmless to humans.

Danger 1/5
Detailed close-up shot of a central ratsnake slithering through grass, highlighting its features.
Non-venomous

Eastern Ratsnake

Pantherophis alleghaniensis

A large, harmless constrictor and one of the best natural rodent controllers around homes and farms. Juveniles are gray and blotched, leading to copperhead confusion.

Danger 0/5
Detailed close-up photo of a snake partially submerged in water, surrounded by lush green algae.
Non-venomous

Northern Watersnake

Nerodia sipedon

A harmless aquatic snake constantly killed out of fear that it is a cottonmouth. It bites readily when grabbed but has no venom.

Danger 1/5
Macro shot of a vibrant red cardinal beetle perched on a slender grass blade.
Non-venomous

Scarlet Kingsnake

Lampropeltis elapsoides

A harmless coral snake mimic. Its red bands touch black bands — 'red touches black, friend of Jack' — separating it from the venomous coral snake.

Danger 0/5
Detailed close-up of a gopher snake in its natural habitat, showcasing its textured scales and earth-tone coloring.
Non-venomous

Gopher Snake

Pituophis catenifer

A large harmless constrictor that imitates a rattlesnake by hissing loudly, flattening its head and vibrating its tail. No rattle and round pupils give it away.

Danger 0/5
Detailed image of a Timber Rattlesnake with focus on its textures and patterns.
Mildly venomous

Eastern Hognose Snake

Heterodon platirhinos

A harmless toad-eater famous for its theatrics — it hisses, flattens its neck like a cobra, then flips over and plays dead. Rear-fanged with toxin that affects only amphibians.

Danger 1/5
A vibrant ball python resting on a tree trunk, showcasing intricate patterns and textures.
Non-venomous

Ball Python

Python regius

The world's most popular pet snake. A docile, non-venomous constrictor that curls into a tight ball when frightened — hence the name.

Danger 0/5
Detailed image of a Burmese python (Python bivittatus) in its natural environment.
Non-venomous

Burmese Python

Python bivittatus

One of the largest snakes on earth and a destructive invasive species in Florida. Non-venomous but a powerful constrictor that can pose a risk to pets and, rarely, people.

Danger 2/5
A venomous snake with a forked tongue, camouflaged in grass.
Non-venomous

Eastern Ribbon Snake

Thamnophis saurita

A slender, harmless relative of the garter snake with crisp stripes and a notably long tail. Common around water but completely harmless.

Danger 0/5
A striking milk snake with vibrant patterns rests on a branch in a natural setting.
Non-venomous

Eastern Milk Snake

Lampropeltis triangulum

A harmless constrictor with bold blotches, often killed because it is mistaken for a copperhead or coral snake. A beneficial rodent and snake predator.

Danger 0/5
Black-and-white close-up of a snake in grass showcasing wildlife and natural detail.
Non-venomous

Black Racer

Coluber constrictor

A slender, fast, harmless snake that flees at high speed when disturbed. Often mistaken for something dangerous because of its dark color and nervous, alert behavior.

Danger 0/5
Close-up view of a snakeskin, showing texture and pattern on a dark background.
Non-venomous

Rough Green Snake

Opheodrys aestivus

A gentle, bright-green insect-eater that lives in bushes and is almost impossible to see against leaves. One of the most harmless snakes in North America.

Danger 0/5
A detailed view of a ring-necked snake amid forest floor debris, showcasing its unique coloration.
Mildly venomous

Ring-necked Snake

Diadophis punctatus

A tiny, secretive snake with a bright neck ring and a vivid orange-yellow belly it curls to flash when threatened. Harmless to people despite mild rear-fanged saliva.

Danger 0/5
Close-up of a coiled California kingsnake on a textured surface highlighting its distinctive pattern.
Non-venomous

Eastern Kingsnake

Lampropeltis getula

A powerful, harmless constrictor famous for eating rattlesnakes and copperheads — it is immune to their venom. A homeowner's best natural defense against venomous snakes.

Danger 0/5
A California kingsnake slithering over sunlit rocks, showcasing its distinct pattern.
Non-venomous

California Kingsnake

Lampropeltis californiae

A striking black-and-white banded constrictor of the western US and a hugely popular pet. Harmless to people and immune to rattlesnake venom.

Danger 0/5
Captivating close-up of a coachwhip snake in South Africa showcasing its textured scales and agile movement.
Non-venomous

Coachwhip

Masticophis flagellum

One of the fastest snakes in North America, named for its braided whip-like tail. Harmless, but its speed and alertness startle people. The 'chases you' myth is just it fleeing.

Danger 0/5
Macro photo of coiled Eastern Massasauga rattlesnake displaying scales and patterns.
Mildly venomous

Western Hognose Snake

Heterodon nasicus

A small, stocky, theatrical snake and a wildly popular pet. It hisses, flattens its neck and plays dead — but is essentially harmless to humans.

Danger 1/5
A detailed close-up of a brown snake amidst lush green leaves in Nigeria.
Non-venomous

DeKay's Brownsnake

Storeria dekayi

A tiny, gentle brown snake that thrives in cities and backyards. Frequently found under stepping stones and flowerpots, and completely harmless.

Danger 0/5
A detailed image of a reticulated python showcasing its patterned scales and intricate skin texture.
Non-venomous

Reticulated Python

Malayopython reticulatus

The longest snake in the world, capable of exceeding 20 feet. Non-venomous but an immensely powerful constrictor — large individuals demand serious respect.

Danger 3/5
Detailed close-up of a python's head showcasing intricate scales and patterns in an outdoor setting.
Non-venomous

Green Anaconda

Eunectes murinus

The heaviest snake on earth and one of the longest. Non-venomous, it kills by constriction and spends most of its life in water where its bulk is supported.

Danger 3/5
Detailed close-up of a boa constrictor's distinctive markings and scales in captivity.
Non-venomous

Boa Constrictor

Boa constrictor

A famous, non-venomous constrictor and popular pet. It subdues prey by constriction and is generally docile, though a large boa is still a powerful animal.

Danger 2/5