I really enjoy Matthew Van Fleet's books. They have pull-out segments that make the animals inside move. I got "Tails" as a gift for my first birthday. I've come to love that book so much that mommy and daddy have rounded out my collection with the remainder of his books (except the one or two that haven't come out yet, that is). The most recent one I've gotten is a book called "Cats." It has tons of cats doing various silly things. But my favorite is the page with the hide cat, the seek cat and the peek-a-boo cat that pops out of the rain boots when you tug on the pull at the bottom of the page! The cover rates a close second. It has a little area that you push in to make the cat's hand dip into the fish bowl as the fish swims just barely out of his reach!
Good times.