Why do snails and slugs come out when it rains?

But when it rains, they "come out," just like many amphibians. I should qualify the first sentence to say SOME snails. There are aquatic snails and terrestrial snails (which I'm sure you're referring to). Aquatic snails generally have gills, while most terrestrial snails have a single lung (I think). read more

Slug Basics. Slugs are mostly water, are soft bodied and produce a large quantity of protective mucous. Because of these characteristics, they are prone to drying out and are active when temperatures are between 38 and 88 degrees Fahrenheit and when relative humidity is near 100 percent. read more

But when it rains, they "come out," just like many amphibians. I should qualify the first sentence to say SOME snails. There are aquatic snails and terrestrial snails (which I'm sure you're referring to). read more

If said snails or slugs are in a tropical region, then it means that they are terrestrial snails and come out to avoid being drowned. If the area is one of scant rainfall, then it will mean that the snails are coming out of hibernation. read more