Mastiff Purebred Dog Breed Information

The Mastiff, a member of the AKC Working group, needs lots of exercise and should be kept in firm shape. This dog breed, also known as Old English Mastiff, is one of the original ancient dog breed types, along with the hounds, herders, and Arctic types of dogs.

It is said that these dogs were distributed around the known world by such ancient peoples as the Egyptians, Persians, Greeks, and Roman armies and traders. Peasants oftentimes kept this dog breed to ward off wolves and other predators in their area.

Be careful not to over-exercise the dog, especially in its first year, since this can add stress to its rapidly growing bones. They are a sensitive, tender, and laid back companion - his best home is inside with access to a large fenced in yard. This is a laid-back dog breed with great strength and a very protective attitude.


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They are a large, massive, and symmetrical dog with a well-knit frame and short, course coat. They were bred for size, strength, protection, and courage. Their coat color may be fawn, apricot, or brindle, usually with a black muzzle, ear and nose.

These dogs stand an average of 27 to 32 inches at the shoulder and usually weighs between 150 and 200 pounds. He is a massive, large-boned, and muscular dog breed with a short and coarse coat, which includes a dense short undercoat. Maintenance for this dog breed overall is quite low, needing only periodic brushing.

Though affectionate with his own owners and good with his own family's children, he may be suspicious of other children and, because of his huge size, can easily hurt a child while playing without meaning to.

Remember, a six-month-old Mastiff puppy may weigh 90 pounds or more but will still have the mind-set of a puppy, so training is essential.

Very important: Mastiffs needs early training and socialization. He can also be quite aggressive toward other dogs and small pets if not socialized properly. Their training should be patient, precise, and never overbearing. Time to train, socialize, and exercise this large dog breed is important and must be made a top priority.

These dogs are good with children but may overwhelm smaller children simply due to their massive size and weight. They are also good with other pets if socialized to them when young.

Strong confident leadership and plenty of socialization are mandatory. It is important to show the Mastiff that you are the leader of the pack and that it knows its place in your own pack.Country of origin: England
Lifespan: 6-10 years
Colors: Apricot, fawn or brindle (should have a fawn or apricot background color) with a black mask and ears
Known health problems: Hip & elbow dysplasia, bloat, progressive retinal atrophy, hyperthroidism, heart problems, eyelid problems, flatulence

Return from Mastiff to Working Dog Group

"I just bought a Chihuahua. It's the dog for lazy people. You don't have to walk it. Just hold it out the window and squeeze." - Anthony Clark

Mastiff Security iPad Case