10-25 lbs
Cairn Terrier
Boston Terrier
Cairn Terrier and Boston Terrier Mix

The Cairoston is a hybrid created from breeding the Cairn Terrier with the Boston Terrier.  The Cairn parent breed originated in the United Kingdom in the 1500’s for the purpose of hunting vermin, otters, foxes and rodents while the Boston parent breed originated in the United States in the 1800’s for purposes of blood sports like bull baiting and pit dog fighting (both of which are now outlawed).  Both parent breeds have temperaments which include aggressiveness, intelligence and courage with the Boston parent contributing affection, friendliness, gentleness, liveliness and playfulness.  They require minimal to moderate amounts of grooming and, though the Cairn parent tends to be more active, the activity levels are similar.  Both parent breeds are great family pets, getting along with children, other animals and being watchful and protective of family members with a wariness of strangers. 

purpose Purpose
Agility, Sporting, Companion
history Date of Origin
ancestry Ancestry
Cairn Terrier, Boston Terrier

Cairoston Health

Average Size
Male Cairoston size stats
Height: 10-17 inches Weight: 10-25 lbs
Female Cairoston size stats
Height: 10-17 inches Weight: 10-25 lbs
Major Concerns
  • Patellar Luxation
  • Mitral Valve Disease
  • Brachycephalic Syndrome
Minor Concerns
  • Glaucoma
  • Hydrocephalus
  • Legg-Calve-Perthes Disease
Occasional Tests
  • Eye
  • Hip
  • Knee
  • Blood Test
  • Heart
  • X-Rays
  • Eye Examination
  • Physical Examination

Cairoston Breed History

Your Cairoston hybrid is the result of breeding the Cairn Terrier and the Boston Terrier.  The Cairn Terrier is considered one of the oldest Terrier breeds, being traced back to the 1500’s in the highlands of Scotland.  This breed belongs to a very old line of working Terriers known to inhabit the Isle of Skye, being bred for courage and the bolting of foxes, otters and vermin from a variety of rocks, cliffs and ledges which are found on the wild shores of Scotland.  This breeding equipped them for the harsh weather and working conditions as they dug out their prey for their masters.  The Boston Terrier is believed to be a cross between the white English Terrier and an English Bulldog which goes back to the 1800’s.  The Boston breed was born in an era in which the Bulldog was being utilized in blood sports activities like bull baiting and pit dog fighting, both of which have since been outlawed. These practices were prevalent at that time in Britain and later in the United States, where these skills were immediately recognized as valuable at that time.  It is also believed that, in order to reduce the size of the Boston, a French Bulldog was introduced into the bio gene pool. Both parent breeds make great canine family members and enjoy agility and obedience competitions and many other energetic activities.  The Cairoston hybrid is recognized by the American Canine Hybrid Club, Dog Registry of America, Inc. and the International Designer Canine Registry.

Cairoston Breed Appearance

The external appearance of your Cairoston hybrid will be dependent upon the breed parent who has dominance in the bio gene pool.  Ultimately, your pet will have a body which is strong and sturdy without being heavily built, ears that are small and carried erect, eyes which are set wide apart, either hazel or dark, round, the muzzle can be medium length with strong jaws which are neither overshot or undershot and large teeth or may be shorter and more square with smaller teeth, strong jaws which are either even or sufficiently undershot to square the muzzle  (from the Boston parent). The tailset may be even on back or set low and may be carried gaily or low and could be various lengths.  The feet can be round and compact with thick pads and arched toes and short nails.  

Cairoston Breed Maintenance

The Cairoston hybrid fits into a moderate level of grooming maintenance in that he will need to be brushed once a week to keep his coat clean and free from debris.  He will need to be bathed only when needed.  He is a minimal shedder but is not considered totally hypoallergenic.  He will need his regular eye and ear examinations to follow up on the various eye problems which are known to afflict the breed parents and appropriate attention to cleanliness of his ears to prevent infections.  Like many other canine breeds and hybrids, appropriate attention will need to be given to the oral health.  Regular teeth cleaning and dental examinations will help to prevent periodontal disease and tooth loss.

Cairoston Temperament

The Cairoston hybrid can have the temperament qualities of either or both breed parents.  The Cairn Terrier and the Boston Terrier both share some Terrier temperament qualities such as intelligence, courage, and aggressiveness.  In addition to these traits, your Cairoston could also exhibit affection, friendliness, gentleness, liveliness and playfulness.  He will be loyal and loving to his owners and family members with some wariness of strangers.  Early socialization with humans and other animals will help to develop this trait into cautious wariness instead of shyness or avoidance or inappropriate aggression.  He will likely get along with your kids and other animals in the household but keep in mind the purposes for which each parent breed was created (hunting, fighting, chasing, digging).  This means that he may get along with Fifi the cat but maybe not so much with the hamster or gerbil that little Jimmy likes to let run loose in the house.  He is very intelligent but also may be stubborn when you’re training him.  His energy levels are most likely in the moderate range with the high levels being contributed by the Cairn breed parent. 

Cairoston Activity Requirements

Your Cairoston hybrid will require daily walks of approximately an hour duration (or several totalling 60 minutes) as well as daily exercise activities like fetch, frisbee, agility and obedience games.  He is a canine who can successfully live in an apartment, or a family home with or without a fenced yard, provided the owners and family members are willing to keep him appropriate exercised.  He is a wanderer and a hunter, so he needs to be kept on a leash whenever outside or properly secured in a fenced area.  Extra steps to provide underground barriers under the fenceline may be needed since he is bred to dig and he does this so very well! He will bond with his family so he will not do well if left alone for long periods of time as this encourages the development of nasty and unacceptable habits like barking, digging and chewing. He can live in rural or urban environments and in a variety of climates.

Cairoston Owner Experiences

12 Weeks
2 People
House & Yard
I have this baby available for a loving family. Was an accidental breedings between my CH Cairn female and my Boston who is showing. Buddy is the last one left. Both parents are health tested. 417-335-0414
2 years, 2 months ago
Gracie Rae
6 Years
2 People
House & Yard
Car rides
boat rides
River swimming
Nature Trails
Couch cuddles
We truly love our Cairoston so much! (Just discovered her breed as we didn't know there were other dogs like her- knew mom was a Cairon but didn't know dad's breed until researching.) She is hyper, friendly, loves people to no end, and she's super smart. She has brought so much love to our household. Our Gracie means the world to us.
2 years, 3 months ago
6 Years
4 People
House & Yard
Learn a new trick
Catch treats
Agility training
High Five
Hide & Seek
Made our family much happier and created a stronger bond between us
5 years, 6 months ago
Book me a walkiee?
Sketch of smiling australian shepherd