Field Slug (Deroceras leave)

All slugs of the Agriolimacidae family have been introduced to SA from Europe and can be serious pests.

 They are found in all habitats including vegetable gardens.

 Deroceras are capable of reproducing by self-fertilization and thus, one slug can become a whole colony.

Info from: Field Guide to the Land Snails and Slugs of Eastern South Africa (Dai Herbert & Dick Kilburn)