The Westminster Kennel Club 132nd Annual Dog Show opens today at Madison Square Garden in New York. In the Dog Show World, this is like the Kentucky Derby, the Indianapolis 500, the Academy Awards, Time's Man of the Year or the Boston Marathon. Out of 2,500 entries, one dog will be named Best in Show. Four new breeds, recently recognized by the American Kennel Club, are making their debuts at Westminster in 2008. They are the Plott hound, the Tibetan Mastiff, the Beauceron, and the Swedish Vallhund.