Homing Snails

Just the other day, someone asked me if it was true that if you throw snails out of your back garden, they will come back. To some extent, it depends on where you throw them: if you live next to a busy 4-lane dual carriageway, then no, they almost definitely won't come back. If you live next door to someone you don't like very much, and they catch you throwing snails over the fence, they might…