Ultimate Mastiff


A large sized grey Ultimate Mastiff
Ultimate Mastiff Quick Summary
Also Known As
LineageCross Breed
Height (at withers)23-30in (58-76cm)
Weight130-180lbs (59-81kg)
Hair Colour(s)Varies
Lifespan9-12 years
Energy LevelHigh
Litter size
Barking TendencyLow
Exercise requirementsMedium
Ease of trainingLow
Suitability for kidsMedium
Animal compatabilityMedium
Aggression levelsLow
Distress if leftMedium

The Ultimate Mastiff is a huge crossbreed dog. The body is muscular with a large chest, strong legs and the head is large and blocky with a wide nose and floppy ears. The coat is fairly short and straight, and the colouring tends to be black, black with tan, brown or gray.


Ultimate Mastiffs are protective and loyal dogs on the whole, but in the same way it that takes effort to move anything large, they can be quite stubborn and so are best suited to experienced dog handlers that can train them properly. Despite their size however, they are good runners and love to swim. These dogs must be properly socialiased from birth, and if done correctly, they should be good around kids and other pets as they are playful and affectionate. It is probably not a good idea to have them around smaller kids though due to their large size and powerful strength. Ultimate Mastiffs are active dogs that will need regular exercise to prevent any destructive behaviour arising from boredom. These dogs are not prone to excessive barking but will bark to raise the alarm, and so they make good watchdogs.

History & Skills

Ultimate Mastiffs exact origins are a little hazy to say the least, but they are a fairly recent breed. These dogs are not purebreds, they are a cross between the Dogue de Bordeaux and the Neapolitan Mastiff to create this huge dog. Mostly bred as a companion and family dog.

Breed Specific Ailments

Ultimate Mastiffs tend to live between 9-12 years. Some of the health problems noted in this breed includes heart and eye problems, cleft pallettes, and as in many large dogs, hip dysplasia.


Ultimate Mastiffs are medium shedders and so are probably not unsuitable for allergy sufferers. Their coats are not high maintenance either, and will simply need a short brushing session two or three times a week.

Exercise & Environment

Ultimate Mastiffs are large dogs that tend to live indoors but would no doubt cramp a smaller home or apartment. They are active dogs that need regular exercise to prevent them becoming overweight, so a daily walk is advised. These dogs have webbed feet and love to swim, and the opportunity to do so will be greatly appreciated.


None of the big three recognise this breed yet (FCI, UK Kennel Club, AKC) but this could change.

Breed Clubs

Coming soon!

Owners Gallery

Pretty empy right now. If you would like to see you dog here please email a photo to BFD Photos along with your name, your dog's name & age, breed and rough location (please keep image file sizes reasonable!).