You've seen them. Hanging on telephone poles and posted on supermarket bulletin boards.

But have you ever wondered about the stories behind them?

When her orange tabby, Zak, disappeared, Nancy Davidson did what countless people before her had done. She made a lost cat poster. And after days of frantic searching, she found him. Nancy was ecstatic. Zak seemed happy, too--although being a cat, it was hard to tell.

Zak may have remained his old self, but Nancy had changed. From that moment on, she became acutely aware of lost cat posters....