My soon-to-be two year old son Jackson has a prized collection of books, in which the pages of P.D. Eastman's Go,Dog Go! are worn, wrinkled, and stained with fruit juice. In places, they are even torn. This is a good thing. The first time we sat down together in the rocking chair to read it, at least a year ago now, Go, Dog Go! charmed child and mother alike from beginning to end. I knew then that this book, with its simplicity and original, appealing characters, would join the ranks of the constantly-read, which reside apart from the rest in his library. These select few sit next to the lamp on his nightstand; you cannot keep them on the bookshelf, so why bother to try? From the different sizes, colors, shapes and locations of the dogs, to the reappearing and increasingly complex matter of the hat, Go, Dog Go! delights Jackson each and every time. It is mandatory bedtime reading (according to him). It goes with us in the car to the sitter's house, the doctor's office, and on road trips. Like Dr. Seuss and Beatrix Potter, Eastman possesses the creative ability to stimulate, entrance, and comfort even the youngest of readers with colorful language, rhyme, and winsome animals all children can relate to. Go, Dog Go! is educational, medicinal, and functional dressed up as just plain fun, and that, perhaps, is its most worthy quality of all.