The timber, prairie and Massasauga rattlesnakes can all be found in Iowa and are generally considered to be the only poisonous snakes native to the state. Rarely, copperheads can be found in localized areas in south-eastern Iowa.Know More
The prairie rattlesnake is found in select areas of northern Iowa where it can reach lengths of 45 inches with the largest specimen recorded at 57 inches. They are normally tan, mottled brown and muddy green and can be identified by their triangular head and large tan rattle on the end of their tail. They normally hibernate in groups throughout the winter before venturing above ground in April or May. The snake's main diet consists of small mammals, amphibians, birds and bird's eggs.
The Massasauga rattlesnake is slightly smaller than the prairie rattlesnake generally only attaining a maximum length of 30 inches. The longest one ever recorded was 39 inches. This snake is normally brown or gray with white or yellow stripes that extend from its head to its neck with additional stripes running along its cheek and jaw-line.
Copperheads are generally the same size as the Massasauga rattlesnakes. However, Copperheads are characterized by a dull-orange color with dark bands that encircle their bodies. Although they lack a rattle, their bright coloring makes them distinctive.Learn more about Snakes
There are many non-venomous water snakes in Tennessee that can be identified by their slender body shape, flattened or slender head, non-distinct neck and round eye pupils. There is one venomous water snake, known as the western cottonmouth, found west of the Tennessee River.Full Answer >
A pointed tail is not an adequate way to determine if a snake is venomous, according to Michigan Wildlife. Venomous snakes within the United States include pit vipers, such as the copperhead, rattlesnake, cottonmouth (water moccasin) and the coral snake.Full Answer >
Kingsnakes, of which there are several species, are not venomous, and as a group they actually prey upon venomous snakes. Some species of king snakes do resemble venomous snakes, but kingsnakes kill their prey using constriction, not venom.Full Answer >
Not all black snakes are poisonous. The black rat snake is a large snake, but it is nonvenomous, instead killing its prey through constriction. The Northern black racer snake can be rather bad-tempered, but it too is nonvenomous.Full Answer >