Digital Books

Though digital books have been around for some time I still feel they can be improved.  I am not talking about the writing or art work, what I am referring to is the covers of the book being animated.  It would be really cool if the drawings could move.  For example on the cover of my book The Adventures Of A Caterpillar that you can buy on Amazon there is a caterpillar.  A customer who is browsing for a book to read could tap the cover and then the caterpillar could dance.  This could add a nice touch.  One of these days the artwork on digital book covers might move and perhaps be 3D.  That would be neat!