I weed the dog-training books and you would not believe how many of them have tooth marks on them! I'm sure the cookbooks have food on them, the art books probably have paint on them, the car-repair books have oil all over them, and tears streak the pages of the poetry books... I'll leave it there; you get the idea.
If you use a library book to train your dog, between sessions, won't you please store it on a high shelf or counter (the book, not the dog), so that if your dog harbors any resentment toward the author, he'll have to sublimate it by eating your slippers instead of the book?
New dog-training books at APL: