Snakes are reptiles with long, thin bodies and no legs. Some lizards are
legless and may look like snakes, but, most lizards have eyelids, and
snakes do not. All snakes eat live prey by grabbing and swallowing whole
without chewing it into pieces. A snake's jaw is flexible so it can open
wide and tackle larger prey. Snakes have two ways they can kill. Some,
like boas, squeeze their bodies around the prey to stop them from
breathing. Venomous snakes, like vipers, have fangs which inject venom
into their prey. Most species of snakes are harmless to humans, but
venomous snakes kill more than 100,000 people each year.
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