What is the name for a large dog breed? - briefly
The term used for a large dog breed is typically "Giant" or "Large." Examples include the Great Dane and Saint Bernard.
What is the name for a large dog breed? - in detail
A large dog breed is often referred to as a "mastiff" or a "giant breed." These terms are used to describe dogs that typically weigh more than 100 pounds (45 kilograms) and stand at least 28 inches (71 centimeters) tall at the shoulder. Mastiffs, such as the English Mastiff, Neapolitan Mastiff, and Tibetan Mastiff, are known for their size and strength. Giant breeds also include the Great Dane, Saint Bernard, Newfoundland, and Irish Wolfhound. Each of these breeds has a unique history and set of characteristics that contribute to their classification as large or giant dogs.