A snail is a mollusc, which is not a mammal or an insect, but a separate group unto itself. There are more creatures in the world than just mammals and insects. There are actually lots of different groups animals can fall into. read more
All snails are cephalopods, so no, a moon snail isn't a mammal. A mammal is warm-blooded, has hair at at least one point in their lives, can produce milk (female). read more
Snails are neither mammals nor reptiles. They belong to the phylum Mollusca and are classified as gastropods. Gastropods are characterized as having a single shell that is capable of hiding them completely. read more