When my DS11 was little, his favorite book was Goodnight Moon. I actually had to buy a few copies over the years because he wore out the pages with his saliva. Not because he would put the book in his mouth, but because he insisted on kissing each picture of the kittens on every page that they appeared.
Another book I highly recommend to anyone with a little one is the Belly Button Book. I think the author is Sandra Boynton, or something very close to that. She has a whole of kids books, but that was our favorite. It's about hippos & how much they love their belly buttons. To this day, we call our belly buttons, "be-bo" like the baby hippo in the book that couldn't say belly button.