Snail world

Rains just started here and i came across a snail at home. I was curious to know about this little creature. Interesting thing is that a snail may have 3 eye stalks also. It has a heart too!.

Explore more about snails at http://www.freewebs.com/worldofsnails/

Here is a picture of a snail and its parts.

This adds one more question which does not have a answer. Is there a living creature in this world/universe/galaxy (whatever it is) without heart?.