This book is a great resource for potential Cavalier owners. My baby sister bought this for me as a gift a few years ago and I am now re-reading it in anticipation of bringing home my Cavalier pup in a few short weeks. Despite already knowing a lot and having done my research, this book still interests me and holds my attention. Everything from physical characteristics to nutritional information and grooming to training is covered, a lot of it specialized to the temperament and personality of the Cavalier.
Mrs. Ewing's about the affectionate and loving little Cavalier King Charles Spaniel is a great overview filled with lots of solid general knowledge and adorable pictures.