Snails come out at night to feed because it is safe then. Their enemies - the birds are all asleep. They do not like the light and they hide away during the day. Good places are under large leaves, under windowsills, under big loose stones, in fact anywhere they feel safe from drying out.
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.