The largest dogs are Great Danes and certain types of Mastiffs. Saint Bernards, Great Pyrenees and Irish Wolfhounds are also some of the biggest dog breeds. More » Pets & Animals Pets Dogs

The heaviest dog ever recorded was Zorba, an English mastiff from the United Kingdom that weighed in at 343 pounds. He measured 8.25 feet in length from nose to tail and stood 35 inches tall. More » Pets & Animals Pets Dogs

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 six main types of Great Danes are black, blue, harlequin, mantle, fawn and brindle. Harlequin Great Danes are white with black patches, and mantle Great Danes are black and white with solid black torsos. More »

Pyrenean Mastiffs can be purchased from breeders around the United States, such as Cinco Deseos Ranch Livestock Guardian Dogs and Pyrenean Mastiffs de Monte Sano. Matching resourcescan also be utilized through online ser... More » Pets & Animals Pets Dogs

Male Tibetan Mastiffs can be as tall as 33 inches at the shoulders and weigh as much as 160 pounds, while females are slightly smaller. According to the American Kennel Club, the Tibetan Mastiff is classified as a large ... More » Pets & Animals Pets Dogs

Pyrenean Mastiffs are suitable for families with small children. This breed tends to be gentle and peaceful when they feel secure, according to the American Kennel Club. More » Pets & Animals Pets Dogs