Generally, snails found in your garden will be introduced species, which have two pairs of tentacles, rather than one pair as in native snails and slugs.
Garden snails are found in urban areas.
Widespread in cities throughout the world.
Other behaviours and adaptations
The Garden Snail was introduced to Australia from Europe. It is always associated with human populations and rarely encountered away from cities. This edible snail is commercially raised in Australia and exported to countries such as France where it is eaten as 'escargot'. Cantareus (Helix) aspersus is slightly smaller than the French species (Helix pomatia), which does not occur in Australia but apparently has a similar taste.