Pit viper

Pit Vipers are a subfamily of venomous snakes known as Crotalinae. They are found primarily in the Americas and Asia. The group includes species such as the copperhead, cottonmouth, and various types of rattlesnakes.

Characteristics

Pit vipers are named for the heat-sensing pit organs located between the eye and the nostril on their heads. These pits allow the snakes to detect warm-blooded prey, even in complete darkness. They have long, hollow fangs that they use to inject venom into their prey. The venom of pit vipers is hemotoxic, causing damage to tissue and blood cells.

Habitat and Distribution

Pit vipers are found in a wide range of habitats, from deserts to rainforests. They are most diverse in tropical regions, but some species are found in temperate climates as well. In the Americas, they range from the southern United States to northern Argentina. In Asia, they are found from eastern India and Nepal through Southeast Asia to Japan and Indonesia.

Behavior and Diet

Pit vipers are primarily nocturnal, hunting at night using their heat-sensing pits. They feed on a variety of small animals, including rodents, birds, and other reptiles. Some larger species are also known to eat small mammals.

Reproduction

Most pit vipers are ovoviviparous, meaning they give birth to live young. The young are born fully formed and capable of hunting within a few days of birth.

Human Interaction

Pit vipers are responsible for a significant number of snakebite incidents and deaths worldwide. Their venom can cause severe tissue damage and can be fatal if not treated promptly. Antivenom is available for the bites of most species.

Conservation Status

Many species of pit vipers are threatened by habitat loss and over-collection for the pet trade. However, some species are common and not currently considered at risk.

See Also

• Snakebite
• Venomous snakes
• Copperhead (snake)
• Cottonmouth (snake)
• Rattlesnake