You know the holidays are upon us when NBC announces its coverage of Macy's Thanksgiving Day Parade, followed by the hugely popular annual canine competition show. This year, the 17th annual National Dog Show Presented by Purina® will be broadcast on Thanksgiving Day, Nov. 22 at noon in all time zones. What better way to prepare for Thanksgiving dinner than by watching the parade first and then the dog show as your favorite dog breeds compete for Best in Breed and then Best in Show.