Top 10 Strongest Dog Breeds In The World. #10. German Shepherd. #9. Great Dane. #8. Newfoundland. #7. Boxer. #6. Siberian Husky. #5. Rhodesian Ridgeback. #4. Irish Wolfhound. #3. Rottweiler. #2. Saint Bernard. And #1. Mastiff Boxer dog dogs german shepherd great dane INU Irish Wolfhound mastiff Newfoundland Rhodesian Ridgeback Rottweiler Saint Bernard Siberian Husky strong dog breeds ニューファンドランド