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The anaconda is a large, non-venomous snake native to tropical South America and Northern Africa. They mostly live in swampy or watery areas. The green anaconda is the biggest snake in the world, with the largest measuring up to 37.5 feet in length. The anaconda is related to the boa constrictor snake. They kill their prey by constriction or squeezing. They wrap themselves around their prey and squeeze to prevent the prey from breathing. They then swallow the animal whole. Play the following videos to learn more about the anaconda snake.