The English Mastiff, also known as Mastiff, is an imposing breed of dog of large size and majestic appearance. It is renowned for its calm and loyal temperament, and its history as a watchdog and protector.

General details

Males usually weigh between 70 and 90 kilograms, while females usually weigh between 60 and 80 kilograms. In terms of height, males measure approximately 76 to 91 centimeters at the withers, and females between 70 and 86 centimeters. The English Mastiff has an average life expectancy of around 6 to 10 years. According to the Fédération Cynologique Internationale (FCI), it belongs to Group 2, which includes Pinscher and Schnauzer type dogs, Molosser and mountain dogs, and Swiss Cattle Dogs.

Breed history in brief

The English Mastiff, or Mastiff, has a history dating back thousands of years. It is believed to have originated from the ancient war dogs used by the Assyrians and Babylonians. During Roman times, Mastiffs were used in the arenas of the coliseums and in warfare. Later, in the Middle Ages, the English Mastiff was used to protect castles and monasteries, and to hunt large animals. As the years went by, the English Mastiff was refined and became a more stable breed. In the 19th century, the process of standardization of the breed began and the appearance and temperament standards we know today were established. In today's society, the English Mastiff is still valued for its imposing appearance and protective nature. Although no longer used in warfare or hunting as in the past, its presence in homes and properties still provides security and companionship.

Breed characteristics

The English Mastiff is a breed of dog of large size and imposing appearance. It has a muscular and robust body structure, with a broad and massive head. Its ears are pendulous and its tail is long and strong. The coat is short and dense, providing adequate protection. On the neck and shoulder areas the coat is rough. The usual colors are fawn, apricot or brindle. His character is friendly, loyal and balanced, which makes him an excellent family companion. It is a calm and affectionate dog with its owners, however, it also stands out for its bravery. It is usually indifferent to strangers.

Common health problems

The English Mastiff, with optimal care and attention, can enjoy a long healthy life, although it is predisposed to certain health problems. Among the most common diseases or disorders are hip and elbow dysplasia, volvulo-gastric dilatation, aortic stenosis and atrial dilatation. In addition to the aforementioned conditions, the OFA (Orthopedic Foundation for Animals) Canine Health Information Center (CHIC) recommends a cardiac and ocular evaluation exam (once at 24 months), as well as a series of tests to assess the following disorders: autoimmune thyroiditis, cystinuria, patellar luxation, canine multifocal retinopathy, degenerative myelopathy and progressive retinal atrophy.

Do you still not know the true nature of your dog?

Unlock the secrets of your pet's DNA with our two ranges.


Breeds + Physical traits


Health + Breeds + Physical traits

Get a 10% discount when you buy two or more kits from the same range.