small breed
Cavalier King Charles Spaniel
Four colors, each with its own name: Blenheim (chestnut on white), tricolor, ruby (solid red) and black and tan. Distinct from the English Toy Spaniel, which the AKC also registers as the King Charles Spaniel - the Cavalier was recreated in the 1920s to bring back the longer-muzzled type seen in Van Dyck portraits, after the flat-faced version had taken over. Source: AKC breed standard.
Bred for one job, keeping company, and Cavaliers do it about as well as any dog can - affectionate with everyone, gentle with children, easy with other animals, happy almost anywhere. The health is the hard part and it belongs up front: mitral valve disease hits this breed earlier and harder than any other, with roughly half carrying a murmur by five and nearly all by ten, and syringomyelia sits alongside it.
Pup Height
12-13 in
Pup Weight
13-18 lb
Pup Lifespan
12-15 years
Your pup, at a glance
What’s Life With This Pup Really Like?
The maximum, and the whole point of the breed. They will find a lap within a minute of one becoming available and stay in it for as long as you allow.
Outstanding. Gentle, patient and genuinely fond of children - though they are small enough that toddlers need supervising for the Cavalier's sake rather than theirs.
Excellent with dogs, cats and most household animals. They have no territorial streak and assume everyone is a friend.
Low. They may announce a knock at the door and then go and greet the visitor happily, which rather undermines the point.
Low to moderate. An hour covers them comfortably and they adapt to whatever the household does.
Moderate. A silky coat that sheds steadily year-round - noticeable on dark clothing, not overwhelming.
Happy and gentle. They enjoy fetch and a bit of chasing, and stop well short of the intensity of a working spaniel.
Very low.
Excellent. Eager, quick and highly food-motivated, with a sensitivity that makes reward-based methods the only sensible approach.
Poor, and cheerfully so. They might bark once and then attempt to befriend the intruder.
Moderate. Several brushings a week plus weekly ear care, with occasional professional tidying rather than a full clip.
Very high. City, country, apartment, family or single household - they adapt to all of them, provided they are not left alone for long.
Lifestyle fit
Could This Be Your Best Breed?
Cavaliers fit almost any home with people in it, apartment or house, and suit a first-time owner on temperament alone. The work is finding a breeder who has both parents cardiologist-examined annually and screens for syringomyelia, and insuring before the first murmur is on the record. Running costs are $1,500 to $2,600 a year. Anyone who is out all day should look elsewhere, and so should anyone who could not face a heart diagnosis in a young dog.
Living Space
Anywhere with people in it. Apartment, house, city or country all work equally - the only arrangement that fails is one where they are left alone for long stretches.
Pup Experience
Ideal for a first-time owner on temperament, and one of the harder breeds to find well-bred. The dog is easy; finding a breeder who health-tests properly is the part that takes work.
Daily Pup Time
Thirty to sixty minutes of walking and play. Brushing takes ten minutes a few times a week, with ears and feathering checked as you go.
Allergies & Coat
The Cavalier King Charles Spaniel scores 6/10 for shedding and 2/10 for drooling. No dog is truly hypoallergenic. The allergens come from dander and saliva, and a dog that sheds this much will leave plenty of hair behind - especially on your furniture, floors, and clothes.
Quirks & challenges
The Not-So-Easy Stuff
Mitral Valve Disease
Roughly half develop a heart murmur by five. Choose only from lines with cardiologist-tested parents, and expect the conversation.
Syringomyelia
A skull too small for the brain, causing fluid pockets in the spinal cord. Painful, common, and MRI-screened in good lines.
Separation Anxiety
Cavaliers were bred to be companions, so being left alone genuinely distresses them. Not a dog for empty houses.
No Road Sense
Enough spaniel to bolt after a bird, no traffic awareness at all. Leashed or fenced, always.
Weight Creeps On
A small, food-keen dog with modest exercise needs. Extra weight loads a heart already under threat.
Ears and Feathering
Long low ears trap moisture and the leg feathering mats. A few minutes several times a week, not monthly.
The good, the bad & the hairy
Health, Care & Costs
Understanding the health risks and ongoing costs of a Cavalier King Charles Spaniel helps you plan for a happy, healthy life together.
12-15 years
$55-$80
per groom (bath, feathering trim, ears, nails), every 6-8 weeks ($350-$650/year)
$1,500-$2,600/year
all-in (food, routine vet, grooming, insurance, incidentals)
Health Risks
Conditions this breed is prone to.
The valve between the left chambers of the heart leaks, the heart works harder to compensate, and eventually it fails. It affects this breed earlier and more often than any other - roughly half have a murmur by age five and nearly all by ten. Go only to a breeder who has both parents cardiologist-examined annually, and ask for the certificates.
The skull is too small for the brain, obstructing the flow of spinal fluid so that pockets form inside the spinal cord. It causes real pain, scratching at the neck and shoulder, and sensitivity to being touched there. Diagnosed by MRI and managed with medication or surgery. Screening programs exist and responsible breeders use them.
The muscles seize during exercise or excitement and the dog collapses without losing consciousness. It is a genetic condition with a DNA test available, so a breeder can tell you both parents' status.
The kneecap slips out of its groove, causing a skipping gait and sometimes needing surgery. Common in small breeds and worth checking at every vet visit.
Long pendulous ears trap warmth and moisture against the canal. Routine weekly checking and drying prevents most of it; ignored, it becomes chronic and expensive.
Dry eye and cataracts both appear in the breed, and there is a DNA test for the combined dry eye and curly coat syndrome. Annual eye checks catch the rest early.
Insurance & Health Coverage
This is the breed where insuring early matters most on the whole site, and the reason is timing. Mitral valve disease usually announces itself as a murmur at a routine check somewhere between three and six - and the moment it is on the record, every insurer excludes heart conditions. Cover taken out before that appointment holds; cover taken out after it is close to worthless for the thing you actually needed.
Syringomyelia carries the other large bill - an MRI to diagnose runs well over a thousand dollars before any treatment, and the medication is lifelong.
Both are common enough in this breed that insurers price for it, and premiums here run above what a fifteen-pound dog would otherwise cost. Choosing a puppy from cardiologist-tested and MRI-screened lines reduces the odds materially, but it does not remove them.
Get a Pet Insurance Quote
Care needs
The Daily Routine
Grooming
A silky, moderately long coat that needs a thorough brush three or four times a week, with particular attention to the ear feathering, the leg furnishings and behind the elbows where mats form first. Ears want checking and drying weekly. Feet are usually tidied every couple of months; the coat is otherwise left natural.
Exercise
Thirty to sixty minutes daily, split into walks and play. They will happily hike further and equally happily spend the day on a sofa, which is precisely why the weight needs watching.
Food & Weight
Measured meals and honest treat accounting. They are small, persuasive and permanently interested in food, and excess weight puts direct strain on a heart that is statistically likely to have trouble anyway.
Similar breeds
If This Isn’t Quite the One
Bichon Frise
A similar size and an equally cheerful, people-centered temperament with far fewer inherited health worries. The Bichon needs considerably more coat maintenance; the Cavalier is easier to groom and harder to find safely.
Bolognese
Another dedicated companion breed bred purely for company, with the same devotion and the same dislike of being left alone. The Bolognese is rarer and lower-shedding; the Cavalier is more outgoing and easier to find.
Cavapoo
The Poodle cross, and a softer coat commitment in one sense and a heavier one in another - less shedding, far more matting. It carries the Cavalier's heart and syringomyelia risk straight through unless the Cavalier parent was screened for both.
Cavachon
The Bichon cross, and the other way of softening this breed. The heart and syringomyelia questions do not go away - a Bichon parent cannot answer them - and the Bichon brings its own skin allergies alongside.