Members of the *Gastropoda* (a class of mollusc) with a coiled shell.

is the common name for members of the class Gastropoda that have a coiled shell when adult. The name may refer to sea snails, land snails, and freshwater snails; although without a qualifier (and in most horticultural usage) the name usually refers to land snails only.

Many kinds of snail are herbivores. Within a horticultural context, they are usually considered pests due to the damage that they can cause. Snails can generally eat a wide range of different plant types and parts, due to their abrasive manner of eating ('chewing').

Snails without a prominent shell are usually known as .

Slug and snail baits based on metaldehydes are available and frequently used (especially in agriculture) but they can be toxic to cats, dogs, and other mammals.

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