Revealing the biggest dog breeds of 2023, you won't believe who's at the top. Number 10. Bernice Mountain Dog, Max Wade, 115 pounds. Number 9. Newfoundland, Max Wade, 150 pounds. Number 8. Anatolian Shepherd, Max Wade, 150 pounds. Number 7. Tibet and Massif, Max Wade, 160 pounds. Number 6. Leian Burger, Max Wade, 170 pounds. Number 5. St. Bernard, Max Wade, 180 pounds. Number 4. Irish Woolfowl, Max Wade, 180 pounds. Number 3. Neapolitan Massif, Max Wade, 200 pounds. Number 2. Great Dane, Max Wade, 200 pounds. Number 1. English Massif, Max Wade, 230 pounds.