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Photo Gallery: Snakes

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Awkward on land but agile in water, the anaconda lives in the swamps and tropical rain forests of South America. This green anaconda is the largest of several varieties; in fact, it is the largest snake in the world by weight, capable of reaching 550 pounds (250 kilograms) and measuring 12 inches (30 centimeters) in diameter. With flexible jaws and muscular bodies, these nonvenomous constrictors squeeze their prey to death and swallow it whole—whether it’s a bird, a wild pig, or a jaguar. Photograph by Claus Meyer/Minden Pictures