A pit viper is a venomous snake known for the heat-sensing pits located between their nostrils and eyes, which help them detect warm-blooded prey. Pit vipers are a diverse group of snakes found in various parts of the world, including the Americas, Asia, and Africa. They have a characteristic triangular-shaped head, vertical pupils, and heat-sensitive organs that allow them to accurately locate and strike their prey, even in darkness or concealed environments. Pit vipers possess long, retractable fangs that they use to inject venom into their prey, which aids in immobilizing or killing them. Some well-known pit vipers include the rattlesnake, copperhead, and fer-de-lance. While their venom can be dangerous to humans, pit vipers generally prefer to avoid confrontation and will strike only when threatened.

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