National Dog Show 2019. Over 2,000 purebread dogs vie to be named Best in Show at the annual event; hosted by John O'Hurley and David Frei, backstage coverage from Tara Lipinski and Johnny Weir.

More than 3,000 canines vie to be Best in Show at the Kennel Club of Philadelphia annual event.

National Dog Show 2015. Hosted by John O'Hurley, David Frei and Mary Carillo. Presented by Purina.

National Dog Show 2016. Thousands of dogs will compete for the coveted "Best in Show" title. Presented by Purina.

National Dog Show 2017. A Thanksgiving Day tradition present by Purina. Hosted by Mary Carillo, David Frei and John O'Hurley.

Beverly Hills Dog Show 2018. John O'Hurley and David Frei host the Beverly Hills Dog Show at the Fairplex in Pomona, Calif.