Snails and slugs, both are invertebrate animals which belong to the Phylum Mollusca. Snails and slugs are closely related. However, the main difference between the two is that snails carry a protective shell...

Both, Leeches and Slugs are elongated-slimy creatures, but vary in their habitats. Leeches are relatives of earthworms, and mostly feed upon blood of other creatures, whereas Slugs belongs to Mollusks, hence...