Does a crab have a brain?

Chef's answer
The nervous system of a crab differs from that of vertebrates (mammals, birds, fish, etc.) in that it has a dorsal ganglion (brain) and a ventral ganglion. ... The brain is tiny, smaller than the point of a pencil, while the ventral ganglion is huge by comparison.
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The nervous system of a crab differs from that of vertebrates (mammals, birds, fish, etc.) in that it has a dorsal ganglion (brain) and a ventral ganglion. ... The brain is tiny, smaller than the point of a pencil, while the ventral ganglion is huge by comparison.
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