The Mastiff is a giant breed of dog, longer in body than in height, with a huge head and wide chest. Muzzle, ears and nose should be black. Coat is fawn, apricot or brindle in color. Some white on the chest and toes is accepted. There is no upper height limit and no weight range in the Mastiff Standard.
In height they generally range from the Standard's minimum of 27 1/2 inches up to 36 inches for the exceptionally tall ones. They can weigh anywhere from 110 pounds to the 343 pounds of Zorba, the world's largest dog, although most Mastiff males weigh around 160-230 pounds and females around 120-170 pounds. Mastiffs are not supposed to resemble Great Danes except possibly in height, nor Saint Bernards, except for the bone, width, chest and large head. They should not be as wrinkled as a Neapolitan nor as dome headed as a Dogue de Bordeaux, nor 'houndy' like a Fila Brasileiro. Mastiffs possess characteristics unique to the breed, especially the head with a broad, deep muzzle with flews hanging over the bottom lip, giving the head a square appearance.
Temperament
A Mastiff should possess a calm, self assured temperament, without being aggressive to humans or other animals, including other dogs. Mastiffs can be very devoted to and protective of their family and friends and should therefore be handled sensibly, as their extremely powerful body can be difficult to control. Needs regular work out to exercise his muscles.
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