How long does a Mastiff Saint Bernard Mix live?

A typical lifespan is 7–10 years, the midpoint of the Mastiff (6–10 years) and the Saint Bernard (8–10 years).

Is a Mastiff Saint Bernard Mix easy to train?

Trainability is moderate, based on how both parent breeds respond to training. Start early and keep sessions short.

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Mastiff Saint Bernard Mix

A Mastiff Saint Bernard mix is a cross between a Mastiff and a Saint Bernard. Most grow into giant dogs of 120–205 lb and live 7–10 years.

Mastiff, a purebred dog — MastiffPhoto: Pleple2000, CC BY-SA 3.0, source

Saint Bernard, a purebred dog — Saint BernardPhoto: Rafael Dominguez Rodriguez, CC BY-SA 4.0, source

Photos show the purebred parents. There is no single look for a mix: puppies in one litter can resemble either side.

Weight120–205 lbcan be 120–230 lb

Height27–30 inat the shoulder

Lifespan7–10 years

SizeGiant

How big does a Mastiff Saint Bernard Mix get?

Mastiff120–230 lb

The mix120–205 lb

Saint Bernard120–180 lb

Pounds. The dark band is where most Mastiff Saint Bernard Mix dogs end up; the light band is the full range between the smallest and largest parent.

Height runs 27–30 inches at the shoulder, against 27.5–30 in for the Mastiff and 26–30 in for the Saint Bernard.

Coat, energy and training

Shedding

Moderate

Neither parent has a low-shedding coat, so expect dog hair around the house and seasonal heavy shedding.

Energy

Moderate

Daily walks and some play are enough for most of these dogs.

Trainability

Moderate

The Mastiff rates moderate and the Saint Bernard moderate; a puppy may lean either way.

Grooming

Low

A weekly brush and the odd bath keep the coat in shape.

Temperament

The Mastiff is usually described as courageous, dignified, good-natured. The Saint Bernard as playful, charming, inquisitive. A mix can take after either parent or land in between. If you can, meet both parents of a puppy before you choose.

Mastiff vs Saint Bernard vs the mix

Trait	Mastiff	Mastiff Saint Bernard Mix	Saint Bernard
Weight	120–230 lb	120–205 lb	120–180 lb
Height	27.5–30 in	27–30 in	26–30 in
Lifespan	6–10 yr	7–10 yr	8–10 yr
Shedding	low	moderate	moderate
Energy	moderate	moderate	moderate
Group	Working	mixed	Working

Questions about the Mastiff Saint Bernard Mix

How big does a Mastiff Saint Bernard Mix get?: Most grow to 120–205 pounds and 27–30 inches at the shoulder. Because puppies can take after either parent, the full possible range is 120–230 pounds.
How long does a Mastiff Saint Bernard Mix live?: A typical lifespan is 7–10 years, the midpoint of the Mastiff (6–10 years) and the Saint Bernard (8–10 years).
Does a Mastiff Saint Bernard Mix shed?: Shedding is moderate. Neither parent has a low-shedding coat, so expect dog hair around the house and seasonal heavy shedding.
Is a Mastiff Saint Bernard Mix easy to train?: Trainability is moderate, based on how both parent breeds respond to training. Start early and keep sessions short.

Other Mastiff mixes

Other Saint Bernard mixes

Figures are calculated from each parent breed's standard height, weight and life expectancy. How we calculate.