The words Dog Breed Info with the letter D inside of a black paw print

Saint Bermastiff

Saint Bernard / Mastiff Mixed Breed Dogs

Information and Pictures

Close up front side view looking down at the dog that is looking up - A shorthaired tan with black and white Saint Bermastiff is sitting on a tan tiled floor in a bathroom in front of a shower and next to a white sink.

"This is a picture of Bowser the English Mastiff / St. Bernard mix at 1 year old and 160 lbs. His mother was a longhaired St. Bernard and his father was a fawn English Mastiff. Bowser is extremely well behaved, gentle and tolerant. He gets along very with other dogs of all sizes, and is polite with cats. Bowser is a rather lazy dog, and has always loved to lounge around, even at a young age. Bowser is also quite a ham, and loves being the center of attention. Bowser also insists on sleeping in bed with his humans, and he snores loudly! Because he is a giant breed, it was important for Bowser to be trained at a young age, while his size was still manageable. Bowser was taught, as Cesar Millan teaches, to walk beside or behind his owners, and not in front of them, which is extremely important with a giant breed. While learning this, Bowser wore a backpack so that he felt like he had an important job to do on his walks. Now, as an adult, Bowser is very polite on a leash and even a child one-third his weight can walk him."

Recognition
  • Saint Mastiff
  • St. Mastiff
Description

The Saint Bermastiff is not a purebred dog. It is a cross between the St. Bernard and the Mastiff. The best way to determine the temperament of a mixed breed is to look up all breeds in the cross and know you can get any combination of any of the characteristics found in either breed. Not all of these designer hybrid dogs being bred are 50% purebred to 50% purebred. It is very common for breeders to breed multi-generation crosses.

Recognition
  • ACHC = American Canine Hybrid Club
  • DRA = Dog Registry of America, Inc.
  • IDCR = International Designer Canine Registry®
Close up front view - A brown with black brindle Saint Bermastiff puppy is sitting on a tan couch and it is looking forward.

Thor the Saint Bermastiff puppy at 3 months old—"Thor's dam is an AKC CH Bloodline Saint Bernard. His sire is a 200 pound AKC reversed brindle English Mastiff. The pups weighed about 50-60 lbs. at age 3 months. All pups have orange or fawn undercoats with black strips over the base color, white chests, white socks and some have a small white blaze. They have a fantastic disposition and are good watchdogs."

Close up front view head and shoulder shot - A brown with black and white Saint Bermastiff dog is sitting down inside a house in front of a front door.

"Bowser weighed about 160 pounds at one year, and had finally learned to be graceful despite his size. Bowser can already be trusted at this age to be left alone with free range of the house, which is a good thing because it would be hard to find a crate to fit him. He does not chew on items, soil the house, or exhibit any other destructive tendencies, even when left alone all day."

Close up front view - A brown with black and white Saint Bermastiff is laying down on a carpet and it is looking forward. Its front legs are spread to the sides and the extra skin on its face is spread out like a freshly poured pancake.

"Bowser (aka greatest pet ever)—his father is purebred Mastiff, and mother purebred Saint Bernard."

The left side of a brown with black and white Saint Bermastiff that is laying down on a tan couch, there is a green pillow in front of it and behind it is a green blanket draped on the arm. There is a wooden coffee table in front of it with a vase of colorful flowers in it.

"At 7 months, Bowser weighed about 125 lbs., and he was very clumsy. He was growing so quickly!"

Front view - A brown with black and white Saint Bermastiff is laying on a carpet. Its mouth is open and it looks like it is smiling. It is wearing a graduation cap.

"When Bowser was 4.5 months, he weighed about 80 lbs. and he was graduating from his first obedience class. Bowser was completely potty trained at this age."

Front view from down low head on at the dog - A brown with black and white Saint Bermastiff puppy is wearing a black harness standing outside in grass on a hill and it is looking to the left.

"When Bowser was 8 weeks old, he already weighed in at 35 lbs. He was a very sweet and cautious puppy, afraid of streets and staircases. He also wanted to put his mouth on everything, and shoes had to be placed out of Bowser's reach."

Close up front view - A small brown with black and white Saint Bermastiff puppy is laying against a person that is covered in blankets.

Bowser the St. Bernard / English Mastiff mix puppy at 8 weeks old

Close up front view - A small brown with black and white Saint Bermastiff puppy is sitting in grass and it is looking up.

Bowser the St. Bernard / English Mastiff mix breed puppy at 8 weeks old

Side view - A brown with black and white Saint Bermastiff puppy is laying across grass and it is looking to the right.

Bowser the St. Bernard / English Mastiff mix breed puppy at 8 weeks old resting in the grass