When I was little I used to raise caterpillars in pickle jars. Most of the time you couldn't tell what kind they were until they metamorphosed. They'd build their cocoons and rattle away for several weeks. I'll never forget my two favorites -- one was a polyphemus moth in fact, and the other a gorgeous luna moth. The funniest part is that even after I let them fly away, they left behind a faint scent of pickles!

oh. And katie? The photo doesnt do luna justice. In person, it's the most beautiful pastel lime color!