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Male crabs use them to show off and fight other males for female attention. Male fiddler crabs use their giant claws to keep cool as well as attract females. They can also be used for defensive purposes.

If the crab is not so smart and gets caught in a crab pot, then the claw is used for dipping into butte

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11y ago

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they use them to hold or grab on to what they are consuming. They also use them to move around so they can get a better grip on things

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15y ago
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They are called pinchers

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10y ago
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defence,mating, or simply grabbing.

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14y ago
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Q: What do lobsters use their claws for?
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