The massive appearance of the Mastiff is not without a touch of grace. The body is generally rectangular in shape. Muscular definition exists from the neck to the hocks. The breed is massive and in proportion to its body. The neck is very thick and angles to a straight back and sloping shoulders. The wrinkles that exist at the crown of its head to its nose are probably one of its distinguishing features. The ears, nose, and mouth are dark. The ears are small and triangular in shape; however, they are rounded at the tip instead of pointed. The nose is prominent. Its coat is short and coarse and lies close to its skin. The tail hangs close to the hocks.


A breed the size of the Mastiff can’t help but have courage. It is not an aggressive dog. It has a gentle and laid back nature. Its gentle nature makes it a natural with children, but it shouldn’t interact with very young or very small children because it could inadvertently cause harm due to its size. It is serious 98% of the time. The breed is protective and will watch over its family and their property.

Height and Weight

The Mastiff is a large breed. It is an average of 30 inches tall. Females tend to be a few inches shorter. Both male and female weigh about 175-190 pounds.

Health Problems

The Mastiff is associated with a few serious health problems. Canine Hip Dysplasia (CHD) and gastric torsion occur most often. Some types develop Progressive Retinal Atrophy (PRA), entropion, and elbow dysplasia.

Ideal Living Conditions

The best place for a Mastiff to live is in a large yard.


The Mastiff doesn’t require a lot of exercise, unless it spends a significant amount of time indoors. If the breed resides indoors it will remain inactive. Indoor types can easily become obese because they don’t obtain enough exercise. Sufficient exercise for the breed is a long walk.

Life Expectancy

The Mastiff lives an average of 5-10 years.

Litter Size

The Mastiff has an average of 8 puppies.


Brushing the Mastiff coat is probably the main grooming that the breed needs. Washing is fine as long as it isn’t excessive. A dry shampoo is recommended when washing the coat.


The Mastiff is an ancient breed that likely originated some time during the 18th century.




The coat of the Mastiff is usually a light yellow or orange, or a combination coat. The coat may have a white chest and dark markings on its head.