Words are important

The Library here is part of a shared cataloging system. This week's update included this interesting paragraph on a cataloging issue;

Pigs is a children's heading that we don't use. We use the LC heading Swine, with |vJuvenile fiction (or |vJuvenile literature) after it. All the pigs have been eradicated from the database; please help in keeping them out.

I laughed out loud when I got to the last sentence because I had a mental image of building a fence to keep the pigs out.