Snail rasping its own shell? Calcium problem?

[lla]

Today I cought one of my snails rasping at it's own shell. It wasn't rasping at the lip but rather at the side of it. Currently their calcium source is a small bowl with eggshell I crushed into a powder, not too thin though. Is it a problem with the calcium source? Is this normal behavior? My two snails have been less active the last two days, I thought it was because of the drop in temperature. They also didn't touch the food, which is a new mixture I didn't give them before so I'm thinking they maybe simply didn't like it? One of my snails is becoming slightly more active today, the one who I cought rasping it's own shell, I'm thinking it's because the temperature went up slightly again. Are my snails all right? Is it normal for snails to rasp a little at their own shells? I also just added in a piece of bone in the hopes that maybe that will be an alternative calcium source, if that is the problem.

[slugs]

As far as I know, thats a normal behavior. Snails seem to like to keep themselves tidy! As long as you don’t start seeing holes, craters, or thin spots, I don’t think its a problem. Good luck with your snails!

[lla]

aaah thank you! I got so worried and I love them to bits! Glad to know it's a normal behavior ! Thanks for the help!

[pasi9]

Like Slugs said, that's normal behaviour. And snails often skip food some days, so don't worry too much about that!

If you want to provide alternative calcium sources just to make sure, try cuttlebone or limestone powder. I've never heard of a snail eating bone.