Slug refers to many species of terrestrial gastropod mollusk found worldwide, and characterized by the lack of a visible shell.
Slugs vary in size but range from 1 inch in length to 7 inches long
Most species of slug eat decaying plant material or fungi; several species eat living plants, while a few more are carnivorous, eating earthworms and other slugs.
Slugs are hermaphrodites, having both female and male reproductive organs. Several days after fertilisation, around 30 eggs are laid in a hole in the ground or underneath something solid such as a rock or log, away from direct sunlight and predators.