Things that I know about snails is that when they move they leave slime and they also move slowly. 

Things I don't know where the slime comes from how smart they are and how much slime it makes before it dies! And also how long can one get.

Are lab for this was to see if the snails can sence danger and so what we did was put salt on one side of a tub and food (radish) leaves and one snail was dumb and went to the salt side and the other one, smart one eat the food. Snails arnt very smart in the way of finding food.