Ultimate Mastiff History
The Ultimate Mastiff is a recently developed pure-breed mastiff that is the result of breeding an American Bulldog and a Mastino Italiano. The creation of this hybrid began in 2009, when the first American Bulldog and Mastino Italiano were mated. The offspring of this mating, named “Ox” and “Bane”, were the foundation stock for the Ultimate Mastiff. The creation of the Ultimate Mastiff is the brainchild of a group of passionate dog owners, breeders, and enthusiasts. They came together to pool their resources and create this exciting new breed. They named the hybrid after the “Ultimate Fighting Championship”, a popular mixed-martial arts sport.
Ultimate Mastiff Physical Characteristics
The Ultimate Mastiff is a very large, very muscular, very large, very shaggy, very broad, very wrinkled, very loose, very heavy, very powerful, very festive, very protective, strong, huge, towering, massive, monstrous, brutal, raw, and old-fashioned looking breed that typically stands between 5 and 7 feet tall at the shoulder and weighs between 250 and 400 pounds. They have a very long, thick, wide, stocky, and heavily muscled torso. They have a very massive head with a broad, flat nose, a very wide, heavy jaw, a very thick neck, and very strong shoulders. Their legs are short and stubby. They have very floppy and wrinkly skin on their neck and back. Their tail is very short and stubby. They have small, round, dark eyes. Their fur is short, coarse, and shaggy.
Eye Colors
Blue, Hazel, Brown, Amber
Nose Colors
Black, Brown, Isabella
Coat Colors
Brindle, Isabella, Fawn, Black, Gray, Brown, Blue
Height Range
Male Height Range: 24 – 30 inches
Female Height Range: 23 – 29 inches
Weight Range
Male Weight Range: 150 – 180 lbs
Female Weight Range: 120 – 160 lbs
Ultimate Mastiff Health
Description of breed health.
Lifespan
10-12 yrs
Ultimate Mastiff Health Concerns
Cherry Eye, Panosteitis, Hip Dysplasia, Bloat, Skin Fold Dermatitis, Epilepsy, Heart Problems, Hyperkeratosis
Ultimate Mastiff Temperament and Behaviour
The Ultimate Mastiff is confident, courageous, and brave. They are affectionate and protective of their family, and tend to be wary of strangers. Although they are large, they are also gentle and patient, and make great companions for children.
Ultimate Mastiff Activity Requirements
The Ultimate Mastiff is a large, strong, and athletic breed of dog that originated in ancient Rome. They are sometimes referred to as the Roman Mastiff, and they are one of the few large, ancient breeds that are still in existence. While they are not as high-energy as some other breeds, Ultimate Mastiffs do require regular exercise. They thrive in a home with a yard where they can play and run around. They also benefit from long walks or jogs. Since they are such a large, muscular dog, they can take quite a bit of exercise and they do not tire easily. While they require a certain amount of exercise, Ultimate Mastiffs are not as needy as some other breeds. They are independent, calm, and loyal. They thrive when they are given a job to do.
Miles Per Day
15 miles
Activity Per Day
60 minutes
Daily Food
3.5 cups
Kennel Club Recognition

American Kennel Club
Not Recognized
Ultimate Mastiff is part of the Unclassified group.
Visit the American Kennel Club website.

The Kennel Club
Not Recognized
Ultimate Mastiff is part of the Unclassified group.
Visit the Kennel Club website.

Australian National Kennel Council
Not Recognized
Ultimate Mastiff is part of the Unclassified group.
Visit the Australian National Kennel Council website.

Canadian Kennel Club
Not Recognized
Ultimate Mastiff is part of the Unclassified group.
Visit the Canadian Kennel Club website.