What happens to a snail's anatomy when it appears to shrink and retreat back into its shell? It looks like it turns itself inside out like a sock.

I think that's when it actually is in contact with something that is unfriendly to it!

EWWWW have you ever sprinkled SALT on one?? The effect you get, is exactly as you describe!

I think you may be talking about slugs... so take a look here

yuck..thanks tree!