A few years ago we bought this book, The Animal Kingdom at a used book sale for our daughter. Back then we weren't familiar with Charley Harper but began to see his work everywhere. We were excited when we realized we had found a gem of a book and quickly rescued it off our daughter's bookshelf (since on occasion she likes to write her name in books and color in them). I'm seeing his work more and more especially after this lovely book by Todd Oldham came out. Even Old Navy started carrying a Charley Harper line, where I found this really sweet Animal Puzzle and Matching Game!