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How Anacondas become the world's largest snakes

October 10, 2018 – Green anacondas, native to South America, are among the world’s largest snakes. The semiaquatic snakes weigh as much as 550 pounds, and can be as long as a school bus. They maintain their massive size by eating prey as large as capybaras and jaguars. Anacondas have evolved special features to help them swallow their large meals whole. Backwards-pointing teeth help move the prey through the snake’s head and into its body, while a snorkel-like wind pipe allows the snake to breathe.
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