Twilight read a book, and the book told her a tale,
There once was a caterpillar, it had started so frail,
It searched for food, for it was in the mood,
For some juicy, juicy leaves, or so it believed.
It ate and ate, until it got full,
And then one night, it felt a strange pull,
Wrapped in a cocoon so tight,
It came out, what a sight!
A beautiful butterfly, oh my!
It stretched it wings, and began to fly...

Twilight is up late one night, reading a pleasant old children's book. Then she hears a sound and investigates. There was a caterpillar, and it was very, very hungry.