Class: Reptilia
Order: Squamata
Family: Viperidae
Genus & Species: Agkistrodon piscivorus
Highly poisonous and on of the largest snakes in the USA the Cottonmouth can reach up to 6 feet in length. They eat frogs, fish, young alligators, mammals, and birds and mate either in the fall or spring. They are also known as the water moccasin.