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A crab is a crustacean and arthropod animal that belongs to the decapod order, whose body presents bilateral symmetry, is formed by several segments, has appendages with articulated pieces and has a cuticle as a cover.
Crabs are ten-legged animals with a calcified shell, antennae and appendages that develop gill breathing. Thanks to their claws they can fight other animals and manipulate food.
There are about four thousand species of crabs. Crabs usually walk on the bottom of the water body.
The crab is an edible animal.
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