One of our favorites is The Crawly Caterpillar. It's an extremely durable board book with touch and feel areas that show a caterpillar becoming a beautiful butterfly. The Tiny Tadpole is from the same series, by the same author. This story follows a tadpole as he grows legs, loses his tail, and becomes a frog. On the last page is a huge surprise. I haven't memorized the text yet but I'm sure I will soon as this is fast becoming another favorite.