Watch Thanksgiving Day Noon all time zones. Man's best friend takes center stage at the Kennel Club of Philadelphia as we celebrate The National Dog Show Presented by Purina. In its 15th year on NBC, actor, author and Broadway star John O'Hurley hosts this event, attended by 2,000 of the nation's leading canines from over 170 breeds (including the world's largest, smallest and most exotic).

"The Dean" David Frei provides expert show commentary with help from skilled sideline reporter Mary Carillo for this ultimate canine showdown. Every dog has his day, but only one can be "Best in Show." Whichever breed reigns supreme, it's guaranteed to be pawsitively thrilling!