Cottonmouth
Agkistrodon piscivorus
Class
Reptilia
Order
Squamata
Family
Viperidae
Reptilia
Squamata
Viperidae
Southern and southeastern United States
Length: 20 - 74.5 in
Aquatic areas, especially swamps and rice fields
1 - 15
Mainly fish and frogs; also small mammals and snakes
Least Concern
It gets its name from the white lining inside its mouth. This species is also called a water moccasin. It is the most abundant venomous snake in Louisiana.
Cottonmouths are primarily active at night, but they like to bask on logs and limbs during the day.
They inject a hemotoxic venom into their prey which breaks down and destroys blood cells and other tissues. It also reduces the ability of blood to coagulate or clot. Total venom replacement actually requires no more than three weeks, even after being fully depleted.