Here are the ones in Ar and way more numerous as well
as more species!
Venomous Species in Arkansas
Species Behavior of a Bite Statistics (from eMedicine)
Texas Coral Snake
(Micrurus tener tener) Venom is highly neurotoxic, blocking nervous system communications. It is possible for a bite to incur very little localized pain or swelling, yet still be life-threatening. Heart, lung, and kidney functions may begin to fail as the venom is absorbed into the blood stream. Respiratory support may be required for up to a week and victims may suffer persistent weakness for weeks to months. In the US, Coral Snakes are responsible for less than 1% of venomous snake bites in the US. Most people bitten by coral snakes are handling them intentionally. Probably less than 20 bites occur per year (though 61 alleged bites were reported to the American Association of Poison Control Centers in 1998). No deaths related to Coral Snake bites have been reported in the US since Coral Snake antivenom became available. Before that time, the estimated case fatality rate was 10%.
S. Copperhead
(Agkistrodon contortrix contortrix) Venom is hemotoxic. Swelling occurs at the site of bite and surrounding area. Although painful, fatalities from a bite are extremely rare. Venom is less potent than other venomous snakes in Arkansas. In the US, Copperheads are responsible for about 25% of venomous snake bites. The American Association of Poison Control Centers (AAPCC) has reported no mortality from Copperhead envenomation since its first annual report in 1983.
W. Cottonmouth
(Agkistrodon piscivorus leucostoma) Venom is highly hemotoxic. Intense swelling, pain, and tissue destruction occurs at the site of the bite. Severe bites on extremities (fingers or toes) may result in permanent damage, disfigurement, or even loss of digits. In the US, Cottonmouth are responsible for about 10% of venomous snake bites. The American Association of Poison Control Centers (AAPCC) has reported no mortality from Cottonmouth envenomation since its first annual report in 1983.
W. Diamondback Rattlesnake
(Crotalus atrox) Venom is highly hemotoxic. A severe bite from a larger snake could prove very serious. In addition to swelling and pain at the site of the bite, system-wide failures (ex: heart, lungs, kidneys) may occur. Rattlesnakes (includes all species) cause about 75% of all bites by identified venomous snakes in the US. Dry bites, in which there is no envenomation, occur in as many as 50% of strikes. An average of 5.5 deaths per year occur as a result of snake bite in the US, most of these after Rattlesnake bites.
Timber Rattlesnake
(Crotalus horridus) Venom is highly hemotoxic. Symptoms are similar to that of a Western Diamondback Rattlesnake bite. See statistics for the Western Diamondback Rattlesnake.
W. Pigmy Rattlesnake
(Sistrurus miliarius streckeri) Venom is hemotoxic. Due to the relatively small size of this snake, fatalities from a bite are essentially unknown. Symptoms are similar to that of a Copperhead bite. See statistics for the Western Diamondback Rattlesnake, but be cautious of over-interpretation... Pigmy Rattlesnakes are one of the smallest species of Rattlesnakes and unable to deliver a deadly dose of venom. I suspect that only a very small number of reported bites in the US can be attributed to this snake.