Snails have a long soft body with a shell stuck on the back. They curl up inside their shell if they feel they are in danger. However when they relax they come out of their shell and look around. As its eyes are Out on stalks it can see around corners and in two directions at once. However it cannot see behind itself as its shell is in the way, so if you want to catch one, creep up behind one.
Snails are herbivores.
That means it eats only plants. It is very fond of soft juicy green plants like cabbage and lettuce and the leaves of garden flowers. All this green food makes it do green POO which it does very frequently. If you hold a snail on your hand you will feel you hand getting wet. A snail is like a slug in a crash helmet.