How long does a Cavalier Boston Terrier Mix live?

A typical lifespan is 12–14 years, the midpoint of the Cavalier King Charles Spaniel (12–15 years) and the Boston Terrier (11–13 years).

Is a Cavalier Boston Terrier Mix easy to train?

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

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Cavalier Boston Terrier Mix

A Cavalier Boston Terrier mix is a cross between a Cavalier King Charles Spaniel and a Boston Terrier. Most grow into small dogs of 12–22 lb and live 12–14 years.

Cavalier King Charles Spaniel, a purebred dog — Cavalier King Charles SpanielPhoto: Mapovfille, CC BY 3.0, source

Boston Terrier, a purebred dog — Boston TerrierPhoto: Svenska Mässan from Sweden, CC BY 2.0, source

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

Weight12–22 lbcan be 12–25 lb

Height14–15 inat the shoulder

Lifespan12–14 years

SizeSmall

How big does a Cavalier Boston Terrier Mix get?

Cavalier King Charles Spaniel13–18 lb

The mix12–22 lb

Boston Terrier12–25 lb

Pounds. The dark band is where most Cavalier Boston Terrier Mix dogs end up; the light band is the full range between the smallest and largest parent.

Height runs 14–15 inches at the shoulder, against 12–13 in for the Cavalier King Charles Spaniel and 15–17 in for the Boston Terrier.

Coat, energy and training

Shedding

Low

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

Very high

The Cavalier King Charles Spaniel rates very high and the Boston Terrier very high; a puppy may lean either way.

Grooming

Low

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

Temperament

The Cavalier King Charles Spaniel is usually described as affectionate, gentle, graceful. The Boston Terrier as friendly, bright, amusing. A mix can take after either parent or land in between. If you can, meet both parents of a puppy before you choose.

Cavalier vs Boston Terrier vs the mix

Trait	Cavalier King Charles Spaniel	Cavalier Boston Terrier Mix	Boston Terrier
Weight	13–18 lb	12–22 lb	12–25 lb
Height	12–13 in	14–15 in	15–17 in
Lifespan	12–15 yr	12–14 yr	11–13 yr
Shedding	low	low	very low
Energy	low	moderate	moderate
Group	Toy	mixed	Non-Sporting

Questions about the Cavalier Boston Terrier Mix

How big does a Cavalier Boston Terrier Mix get?: Most grow to 12–22 pounds and 14–15 inches at the shoulder. Because puppies can take after either parent, the full possible range is 12–25 pounds.
How long does a Cavalier Boston Terrier Mix live?: A typical lifespan is 12–14 years, the midpoint of the Cavalier King Charles Spaniel (12–15 years) and the Boston Terrier (11–13 years).
Does a Cavalier Boston Terrier Mix shed?: Shedding is low. Neither parent has a low-shedding coat, so expect dog hair around the house and seasonal heavy shedding.
Is a Cavalier Boston Terrier Mix easy to train?: Trainability is very high, based on how both parent breeds respond to training. Start early and keep sessions short.

Other Cavalier mixes

Other Boston Terrier mixes

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