The dog used for this movie was a Great Dane. So, when someone says he has a Marmaduke or plans to get one, then that person is referring to the Great Dane. This breed of dog grows so big and is currently the tallest dog breeds in the world, according to the Guinness book of record.Click to see full answer. Similarly, you may ask, what breed of dogs are in Marmaduke? Great Dane Subsequently, question is, what is the largest breed of dog? English mastiff Besides, is the Marmaduke dog still alive? Brad Anderson, the cartoonist who created “Marmaduke,” the widely syndicated comic about a mischievous but lovable Great Dane, died on Aug. 30 in The Woodlands, Tex. He was 91. His death was confirmed by Universal Uclick, which syndicated the cartoon.What type of dog was Astro? Great Danes