The Great Dane is a German breed of domestic dog known for its large size. The name simply meant 'English dog'. Since then, the English word 'dog' has come to be associated with a molossoid dog in Germany and France. The name simply meant 'English dog'. Since then, the English word 'dog' has come to be associated with a molossoid dog in Germany and France. This laid the foundations from which the breed was developed. During the 19th century, the dog was known as a 'German boarhound' in English-speaking countries. Some German breeders tried to introduce the names 'German Dogge' and 'German Mastiff' on the English market, because they believed the breed should be marketed as a dog of luxury and not as a working dog. Great Dane Club of America.