If TV's "Dog Whisperer" has taught us anything, it's that every pooch should be put in its place—a cozy place, that is. These cubbies-in-a-bookshelf are a clever alternative to pet beds that tkae up floor real estate. Built into a niche, the custom piece has a 24-inch-deep nook for Sam (left) and Benny, topped by narrower shelves for books and keepsakes. You can easily modify any bookcase that's at least 15 inches deep to accommodate your four-legged friend; just remove one or two of the bottom shelves and secure it to the wall so that it doesn't topple over when your dog or cat crawls in. Don't forget to toss in a pillow for extra comfort.