Trimeresurus is a genus of venomous snakes commonly known as pit vipers. They are primarily found in tropical and subtropical regions of Asia, including countries like India, Thailand, and Indonesia. These snakes are characterized by their triangular heads, vibrant colors, and heat-sensing pits located between their eyes and nostrils, which help them detect warm-blooded prey. Most species within the Trimeresurus genus are arboreal, meaning they often live in trees. They primarily feed on small mammals, birds, and lizards. While their venom can be dangerous to humans, bites are relatively rare, and many species are considered to be of low risk if treated promptly.