The article discusses four deadly venomous snakes: Terciopelo, Puff adder, Carpet viper, and Russell's viper, and the potential dangers of being bitten by one of these snakes. The Terciopelo is found in Central and South America and has venom that can cause severe tissue damage and internal bleeding. The Puff adder is native to Africa and is responsible for more deaths than any other snake in Africa due to its potent venom. The Carpet viper, also found in Africa, has venom that can cause excessive bleeding and tissue damage.

Russell's viper, found in South and Southeast Asia, has a powerful venom that can lead to paralysis, bleeding, and even death. The article emphasizes the importance of seeking immediate medical attention if bitten by one of these snakes, as their venom can be life-threatening if not treated promptly.