Dewey is not the story of a cat. It is the story of librarian and co-writer Vicki Myron. There is nothing wrong with this. The “dogoir”, as it’s come to be called, is hugely popular form of memoir that uses a dog as it’s focal point. Dewey is a “catoir”.
It was an easy to read book, and I love animals, so stories about them engage me. In person I probably would have been one of Dewey’s fans, however, the book just wasn’t that interesting to me. Not every pet, not even ones lots of people love, needs a book.