WHAT IS THE MOST VENOMOUS SNAKE IN AMERICA?




As luck would have it, everything you ever learned from those old cowboy films appears to be true. Well, at least when it comes to venomous snakes. It turns out that after much research, Rattlesnakes are in fact the most poisonous snake in north America.

The Rattlesnake is easily identifiable by the tell-tale rattle on the end of its tail. Rattlesnakes are actually a part of the Pit Viper family, and are capable of striking out at up to 2/3rds of their body length.

The Eastern Diamondback in considered the most venomous rattlesnake species in North America. Surprisingly, juveniles are considered more dangerous than adults! This is because they are unable to control the amount of venom injected. Most species of rattlesnakes have hemotoxic venom which destroys tissue, degenerates organs and causing coagulopathy (disrupted blood clotting).

Some degree of permanent scarring is very likely in the event of a venomous bite, even with prompt, effective treatment. In extreme cases this can lead to the loss of a limb or death. Difficulty breathing, paralysis, drooling and massive haemorrhaging are also common symptoms. Thus, a rattlesnake bite is always a potentially fatal injury. Untreated rattlesnake bites, especially from larger species, are very often fatal. However, antivenin, when applied in time, reduces the death rate to less than 4%.

Venomous snakes that are found in each state

Of course, there are other venomous snakes native to North America and so the following list is designed to list the venomous snakes of each state, but should in no way be considered an authoritative list.

Let's face it, many if not most people have some anxiety about snakes and with good cause. Snakes are wild reptiles that will bite and defend themselves if threatened. For the welfare of both humans and snakes, it is best to leave them alone and to avoid contact.

In the United States there are 4 types and 20 species of venomous snakes, which cause even greater concern, due to the potential pain and lethality of being bitten.

Currently, there is at least one species of venomous snake found in every State in the U.S. with Alaska being the only exception. This will surely change as global warming continues and since snakes play such an important part in the ecosystems where they are found, it is a tragedy for them to be  killed, due to fear and ignorance.

Some basic information about snakes in general and venomous snake in particular, can go a long way in lessening our fears, while maintaining our respect for snakes and their role in nature.

My condolences to those living in Arizona - they have the most species of venomous snakes in the entire United States.

Alabama
Carolina Pygmy Rattlesnake - Sistrurus miliarius miliarius ◦Dusky Pygmy Rattlesnake - Sistrurus miliarius barbouri ◦Eastern Cottonmouth - Agkistrodon piscivorus piscivorus ◦Eastern Coral Snake - Micrurus fulvius ◦Eastern Diamondback Rattlesnake - Crotalus adamanteus ◦Florida Cottonmouth - Agkistrodon piscivorus conanti ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri

Alaska◦
No venomous snakes have been recorded in Alaska

Arizona ◦
Animas Ridgenose Rattlesnake - Crotalus willardi obscurus ◦Arizona Black Rattlesnake - Crotalus oreganus cerberus ◦Arizona Coral Snake - Micruroides euryxanthus euryxanthus ◦Arizona Ridgenose Rattlesnake - Crotalus willardi willardi ◦Banded Rock Rattlesnake - Crotalus lepidus klauberi ◦Colorado Desert Sidewinder - Crotalus cerastes laterorepens ◦Desert Massasauga - Sistrurus catenatus edwardsii ◦Grand Canyon Rattlesnake - Crotalus oreganus abyssus ◦Great Basin Rattlesnake - Crotalus oreganus lutosus ◦Hopi Rattlesnake - Crotalus viridis nuntius ◦Mojave Desert Sidewinder - Crotalus cerastes cerastes ◦Mojave Rattlesnake - Crotalus scutulatus ◦Northern Black-tailed Rattlesnake - Crotalus molossus molossus ◦Prairie Rattlesnake - Crotalus viridis viridis ◦Sonoran Desert Sidewinder - Crotalus cerastes cercobombus ◦Southwestern Speckled Rattlesnake - Crotalus mitchellii pyrrhus ◦Tiger Rattlesnake - Crotalus tigris ◦Western Diamondback Rattlesnake - Crotalus atrox ◦Western Twin Spotted Rattlesnake - Crotalus pricei pricei

Arkansas◦
Southern Copperhead - Agkistrodon contortrix contortrix ◦Texas Coral Snake - Micrurus tener ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma ◦Western Diamondback Rattlesnake - Crotalus atrox ◦Timber Rattlesnake - Crotalus horridus

California◦
Colorado Desert Sidewinder - Crotalus cerastes laterorepens ◦Great Basin Rattlesnake - Crotalus oreganus lutosus ◦Mojave Desert Sidewinder - Crotalus cerastes cerastes ◦Mojave Rattlesnake - Crotalus scutulatus ◦Northern Pacific Rattlesnake - Crotalus oreganus oreganus ◦Panamint Speckled Rattlesnake - Crotalus mitchellii stephensi ◦Red Diamond Rattlesnake - Crotalus exsul ◦Southern Pacific Rattlesnake - Crotalus oreganus helleri ◦Southwestern Speckled Rattlesnake - Crotalus mitchellii pyrrhus ◦Western Diamondback Rattlesnake - Crotalus atrox

Colorado◦
Desert Massasauga - Sistrurus catenatus edwardsii ◦Midget Faded Rattlesnake - Crotalus oreganus concolor ◦Prairie Rattlesnake - Crotalus viridis viridis ◦Western Massasauga - Sistrurus catenatus tergeminus

Connecticut◦
Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

Delaware ◦
Northern Copperhead - Agkistrodon contortrix mokasen

Florida◦
Dusky Pygmy Rattlesnake - Sistrurus miliarius barbouri ◦Eastern Coral Snake - Micrurus fulvius ◦Eastern Cottonmouth - Agkistrodon piscivorus piscivorus ◦Eastern Diamondback Rattlesnake - Crotalus adamanteus ◦Florida Cottonmouth - Agkistrodon piscivorus conanti ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus

Georgia◦
Carolina Pygmy Rattlesnake - Sistrurus miliarius miliarius ◦Dusky Pygmy Rattlesnake - Sistrurus miliarius barbouri ◦Eastern Coral Snake - Micrurus fulvius ◦Eastern Cottonmouth - Agkistrodon piscivorus piscivorus ◦Eastern Diamondback Rattlesnake - Crotalus adamanteus ◦Florida Cottonmouth - Agkistrodon piscivorus conanti ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma

Hawaii ◦
Yellow-Bellied Sea Snake

Idaho◦
Great Basin Rattlesnake - Crotalus oreganus lutosus ◦Northern Pacific Rattlesnake - Crotalus oreganus oreganus ◦Prairie Rattlesnake - Crotalus viridis viridis

Illinois◦
Eastern Massasauga - Sistrurus catenatus catenatus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Osage Copperhead - Agkistrodon contortrix phaeogaster ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma

Indiana◦
Eastern Massasauga - Sistrurus catenatus catenatus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma

Iowa◦
Eastern Massasauga - Sistrurus catenatus catenatus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Osage Copperhead - Agkistrodon contortrix phaeogaster ◦Timber Rattlesnake - Crotalus horridus ◦Western Massasauga - Sistrurus catenatus tergeminus

Kansas◦
Broad-Banded Copperhead - Agkistrodon contortrix laticinctus ◦Desert Massasauga - Sistrurus catenatus edwardsii ◦Osage Copperhead - Agkistrodon contortrix phaeogaster ◦Prairie Rattlesnake - Crotalus viridis viridis ◦Timber Rattlesnake - Crotalus horridus ◦Western Massasauga - Sistrurus catenatus tergeminus

Kentucky ◦
Northern Copperhead - Agkistrodon contortrix mokasen ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri

Louisiana ◦
Eastern Coral Snake - Micrurus fulvius ◦Eastern Diamondback Rattlesnake - Crotalus adamanteus ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Texas Coral Snake - Micrurus tener ◦Timber Rattlesnake - Crotalus horridus ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma

Maine◦
Timber Rattlesnake - Crotalus horridus

Maryland◦
Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

Massachusetts ◦
Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

Michigan◦
Eastern Massasauga - Sistrurus catenatus catenatus

Minnesota◦
Timber Rattlesnake - Crotalus horridus

Mississippi◦
Dusky Pygmy Rattlesnake - Sistrurus miliarius barbouri ◦Eastern Coral Snake - Micrurus fulvius ◦Eastern Cottonmouth - Agkistrodon piscivorus piscivorus ◦Eastern Diamondback Rattlesnake - Crotalus adamanteus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri

Missouri◦
Eastern Massasauga - Sistrurus catenatus catenatus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Osage Copperhead - Agkistrodon contortrix phaeogaster ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma ◦Western Massasauga - Sistrurus catenatus tergeminus ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri

Montana◦
Prairie Rattlesnake - Crotalus viridis viridis Nebraska ◦Osage Copperhead - Agkistrodon contortrix phaeogaster ◦Prairie Rattlesnake - Crotalus viridis viridis ◦Timber Rattlesnake - Crotalus horridus ◦Western Massasauga - Sistrurus catenatus tergeminus

Nevada◦
Great Basin Rattlesnake - Crotalus oreganus lutosus ◦Mojave Desert Sidewinder - Crotalus cerastes cerastes ◦Mojave Rattlesnake - Crotalus scutulatus ◦Panamint Speckled Rattlesnake - Crotalus mitchellii stephensi ◦Southwestern Speckled Rattlesnake - Crotalus mitchellii pyrrhus

New Hampshire◦
Timber Rattlesnake - Crotalus horridus

New Jersey◦
Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

New Mexico◦
Animas Ridgenose Rattlesnake - Crotalus willardi obscurus ◦Arizona Black Rattlesnake - Crotalus oreganus cerberus ◦Arizona Coral Snake - Micruroides euryxanthus euryxanthus ◦Banded Rock Rattlesnake - Crotalus lepidus klauberi ◦Desert Massasauga - Sistrurus catenatus edwardsii ◦Mojave Rattlesnake - Crotalus scutulatus ◦Mottled Rock Rattlesnake - Crotalus lepidus lepidus ◦Northern Black-tailed Rattlesnake - Crotalus molossus molossus ◦Prairie Rattlesnake - Crotalus viridis viridis ◦Western Diamondback Rattlesnake - Crotalus atrox

New York◦
Eastern Massasauga - Sistrurus catenatus catenatus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

North Carolina◦
Carolina Pygmy Rattlesnake - Sistrurus miliarius miliarius ◦Eastern Coral Snake - Micrurus fulvius ◦Eastern Cottonmouth - Agkistrodon piscivorus piscivorus ◦Eastern Diamondback Rattlesnake - Crotalus adamanteus ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

North Dakota◦
Prairie Rattlesnake - Crotalus viridis viridis

Ohio◦
Eastern Massasauga - Sistrurus catenatus catenatus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

Oklahoma◦
Broad-Banded Copperhead - Agkistrodon contortrix laticinctus ◦Desert Massasauga - Sistrurus catenatus edwardsii ◦Osage Copperhead - Agkistrodon contortrix phaeogaster ◦Prairie Rattlesnake - Crotalus viridis viridis ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma ◦Western Diamondback Rattlesnake - Crotalus atrox ◦Western Massasauga - Sistrurus catenatus tergeminus ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri

Oregon◦
Great Basin Rattlesnake - Crotalus oreganus lutosus ◦Northern Pacific Rattlesnake - Crotalus oreganus oreganus

Pennsylvania◦
Eastern Massasauga - Sistrurus catenatus catenatus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

Rhode Island◦
Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

South Carolina◦
Carolina Pygmy Rattlesnake - Sistrurus miliarius miliarius ◦Dusky Pygmy Rattlesnake - Sistrurus miliarius barbouri ◦Eastern Coral Snake - Micrurus fulvius ◦Eastern Cottonmouth - Agkistrodon piscivorus piscivorus ◦Eastern Diamondback Rattlesnake - Crotalus adamanteus ◦Florida Cottonmouth - Agkistrodon piscivorus conanti ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Timber Rattlesnake - Crotalus horridus

South Dakota ◦
Prairie Rattlesnake - Crotalus viridis viridis

Tennessee◦
Southern Copperhead - Agkistrodon contortrix contortrix ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma ◦Timber Rattlesnake - Crotalus horridus ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri

Texas◦
Banded Rock Rattlesnake - Crotalus lepidus klauberi ◦Broad-Banded Copperhead - Agkistrodon contortrix laticinctus ◦Desert Massasauga - Sistrurus catenatus edwardsii ◦Mojave Rattlesnake - Crotalus scutulatus ◦Mottled Rock Rattlesnake - Crotalus lepidus lepidus ◦Northern Black-tailed Rattlesnake - Crotalus molossus molossus ◦Prairie Rattlesnake - Crotalus viridis viridis ◦Southern Copperhead - Agkistrodon contortrix contortrix ◦Texas Coral Snake - Micrurus tener ◦Timber Rattlesnake - Crotalus horridus ◦Trans-Pecos Copperhead - Agkistrodon contortrix pictigaster ◦Western Cottonmouth - Agkistrodon piscivorus leucostoma ◦Western Diamondback Rattlesnake - Crotalus atrox ◦Western Massasauga - Sistrurus catenatus tergeminus ◦Western Pygmy Rattlesnake - Sistrurus miliarius streckeri

Utah◦
Great Basin Rattlesnake - Crotalus oreganus lutosus ◦Midget Faded Rattlesnake - Crotalus oreganus concolor ◦Mojave Desert Sidewinder - Crotalus cerastes cerastes ◦Mojave Rattlesnake - Crotalus scutulatus ◦Prairie Rattlesnake - Crotalus viridis viridis ◦Southwestern Speckled Rattlesnake - Crotalus mitchellii pyrrhus

Vermont ◦
Timber Rattlesnake - Crotalus horridus

Virginia◦
Eastern Cottonmouth - Agkistrodon piscivorus piscivorus ◦Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

Washington◦
Northern Pacific Rattlesnake - Crotalus oreganus oreganus

West Virginia◦
Northern Copperhead - Agkistrodon contortrix mokasen ◦Timber Rattlesnake - Crotalus horridus

Wisconsin◦
Eastern Massasauga - Sistrurus catenatus catenatus ◦Timber Rattlesnake - Crotalus horridus

Wyoming◦
Midget Faded Rattlesnake - Crotalus oreganus concolor ◦Prairie Rattlesnake - Crotalus viridis viridis  

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