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Gastropoda Snails And Slugs As Animals
Snail-like animals that naturally lack a shell, or have only an internal shell, are usually called slugs, and land snails that have only a very small shell (that they cannot retract into) are often called semislugs.
Snail
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Snail, Gastropoda As Animals

Includes land snails, terrestrial pulmonate gastropod molluscs.


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