Ultimate Mastiff

Dog Breed Profile

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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.

Time of Origin


Country of Origin


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.


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.