American Masti-Bull

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United States
American Bulldog
The American Masti-Bull is a hybrid breed created in the 1960s in the United States. The breed was developed by breeding the American Bulldog with the Mastiff to create a large to giant dog who can be loyal and affectionate with his family, as well as an aggressive guard dog when needed. The Masti-Bull needs little grooming, but will drool a lot, often more than first time owners will expect. While not a highly active breed, this dog does need daily exercise to prevent boredom vices and keep him healthy.
Gaurd dog
Date of Origin
American Bulldog, Mastiff

American Masti-Bull Breed History

The American Masti-Bull is an American made hybrid dog that is a cross between an American Bulldog and a Mastiff, also known as the English Mastiff. This hybrid breed is also known as the American Bandogge Mastiff, a term which can get a little confusing. It is used to designate hybrids made from the crossings of any type of Bulldog with any type of Mastiff. Originally, this hybridization was thought to have started in the 1960s with two specific breeders, namely John Swinford, an American veterinarian who wanted to breed the best guard dog, and Joe Lucero, who called his dogs American Bandog Mastiffs. The American Bulldog is more similar to 17th century bull-baiting dogs from Great Britain than the English Bulldog, and is believed to have come to the United States during the colonial period and used as bull, bear, and buffalo baiters. In the southern states, they were used by farmers to catch feral pigs and cattle. The modern American Bulldog can trace its roots to these southern ancestors who survived in Alabama and Georgia. The breed gained popularity in the 1980s as a guard and family dog, but is still not recognized by the AKC. The Mastiff is also called the English Mastiff, and was originally bred as a guard dog. The date of origin of the Mastiff is unknown, but Caesar left written documentation about the breed in 55 B.C. after the Romans had invaded Britain. Even earlier accounts of Mastiffs have been found on ancient Egyptian monuments dating back to 3000 B.C. The Mastiff was recognized by the AKC in 1885.

American Masti-Bull Breed Appearance

The American Masti-Bull is a large hybrid dog that is bred by crossing an American Bulldog with a Mastiff. Though shorter than a Mastiff, it retains the giant dog’s thick bones. Like the Bulldog, it is heavily muscled, and can weigh over 100 pounds. A large and deep chest is supported on strong legs. A well-muscled neck supports a head with bulldog characteristics on a wider scale. A short snort leads to a wide nose. The coat is comprised of fine, short hair that is dense and close to the body. Coat colors can range from brindle, fawn, brown, black, blue, red, and white. Any colored coat can have white markings.

American Masti-Bull Breed Maintenance

The American Masti-Bull requires little in the way of grooming, as it only sheds moderately. The fine, short hair of this breed needs a regular brushing with a firm bristle or rubber brush to cut down on shedding by removing dead hair and dandruff. An occasional bath will keep the coat clean and healthy, but should not exceed once a month. The American Masti-Bull is not a hypoallergenic breed. Regularly monitoring and cleaning the ears and eyes can reduce the risk of infections. Also, monitoring the skin for any signs of allergies or infections can alert you to the problems that the breed may be at risk for.

American Masti-Bull Activity Requirements

The American Masti-Bull is a gentle giant and an affectionate family companion, who thrives on attention. This outgoing and playful dog gets along well with children, and may even become the babysitter. He can be an excellent guard dog when he perceives a threat, and is only openly aggressive to strangers in these circumstances. If provided with good socialization early on, the Masti-Bull can live peacefully with other household pets. If this important socialization does not occur, it could result in aggression towards other dogs. This is a loyal and intelligent breed, but needs a confident and strong leader. Training can be challenging for first time dog owners who may be unfamiliar with dog communication. The American Masti-Bull can change from gentle companion to aggressive protector quickly, so an ideal owner for this breed is someone who is familiar with dog instincts. It is important to establish the rules early on, as this large breed can be fearless and stubborn. This moderately energetic breed needs regular exercise, such as walks or trips to the dog park, or else can develop unwanted destructive behaviors when left alone.

American Masti-Bull Owner Experiences

7 Years
1 People
House & Yard
Diesel considers himself a human, and he is interested in anything he sees my son doing. He was quite the chewer as a pup, but grew out of that stage quickly. He is highly intelligent, and learns at an impressive speed. He understands verbal commands, as well as hand gestures, but can be very defiant and stubborn when HE chooses to be. He was crate trained as a pup, and never, seriously NEVER has any accidents in the house. He is very affectionate with people he knows and loves attention, but also aggressive towards strangers and other animals. He tolerates small dogs, but not cats or larger dogs. He very much likes children, as long as they don't scream or pull his ears or tail. He doesn't handle loud noises well at all...he is mostly afraid of loud bangs and gunfire, and a human yelling or screaming makes him nervous. His personality is quite interesting, as he is sensitive and gets his feelings hurt easily. He turns his back and pouts when he doesn't get his way, and if I tell him I'm going to get a puppy he runs and hides! He is extremely protective of his immediate family, and his house and yard, and he loves to swim, but hates bath time to the point that he will growl and nip at can't even say the word BATH around him, because he will hide. Diesel is mostly brindle in color, with a white patch on his chest, and white patches on his toes of all four paws. He weighs about 140-145 pounds, and his back is wide and about 2 1/2 feet from the ground, his head reaches about 3 feet. He's very large!
2 months, 4 weeks ago
1 year 6 months
4 People
House & Yard
I couldn't have asked for a better dog than my mastibull Reagan. Ever since he was a puppy he was very easy to train and obedient. Training was never an issue with him, he was quickly potty trained and learned commands very quickly. He's amazingly gentle around small children, children younger than 7 years of age are at our home constantly and he let's them hang all over him. While very protective of his home and family, he has never bit or even niped at anyone, even when he was a puppy. Since he is a guard breed, he's very protective of our home which has a large fenced in yard. He let's almost everyone who walks by know who's yard it is! Our Mastibull also is constantly on alert. Reagan religiously checks all the rooms in the house and all windows (we have a large old home with 40+ windows) at least once a hour during the day, and gets up every few hours at night to check the house for anything out of place. On to his appearance, Our mastibull took heavily to the mastiff side of his genes. While not as tall as a standard mastiff he's still built very large. He weighs around 115 pounds and is still growing into his body. While very large, he's very athletic and quick. He manages to get from the back of our large yard to the from in a matter of seconds. He has a fawn coat, very large head, and a very muscular and intimidating frame. Overall, I couldn't ask for a better combination of a loving family dog and intimidating protector of his home and family!
5 months, 2 weeks ago
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