The world's biggest breed of dog is the Great Dane. As of 2015, a Great Dane named Zeus, who stands 44 inches high at the shoulders, holds the world record for largest dog. More »

The Daily Puppy states that the American bulldog is the largest pit bull breed. Thee term "pit bull" is not an individual breed of dog. More »

The largest dog breed in terms of height, measured at the shoulder, is the Great Dane. When it comes to mass, however, the English Mastiff is the biggest. More »

www.reference.com Pets & Animals Pets Dogs

The Great Dane is the largest dog breed, according to the Conservation Institute and About.com. The world record holder for tallest dog is the Great Dane Zeus, who died in September 2014 at age 5. He was 44 inches tall a... More »

www.reference.com Pets & Animals Pets Dogs

The largest dog breed in terms of height, measured at the shoulder, is the Great Dane. When it comes to mass, however, the English Mastiff is the biggest. More »

www.reference.com Pets & Animals Pets Dogs

The Greyhound is the fastest breed of dog in the world. The Greyhound has been known to reach speeds of up to 45 miles per hour. Other dogs that rank about as fast as a Greyhound include Whippets, Vizlas, Weimaraners, Sa... More »

www.reference.com Pets & Animals Pets Dogs

The fastest dog breed in the world is the greyhound. Greyhound dogs can reach speeds up to 45 miles per hour with unsubstantiated reports of exceptional greyhounds reaching more than 50 miles per hour. More »