Cavalier King Charles SpanielSweet-natured companion with known health risks
The Cavalier King Charles Spaniel is one of the gentlest, most adaptable companion dogs, friendly with almost everyone. It suits families and first-time owners, but buyers should understand the breed's significant inherited health issues and choose a breeder very carefully.

Why people love the Cavalier King Charles Spaniel
- Gentle and affectionate with children, adults and seniors
- Usually friendly with other dogs and cats
- Adapts to apartments, houses, active or quiet routines
- Responds well to gentle, reward-based training
- Small enough to travel and fit on a lap
Things to consider
- High rates of inherited heart disease and syringomyelia
- Dislikes long hours alone
- Silky coat and ear feathering need frequent brushing
- Gains weight easily and loves food
- Too friendly to be a real watchdog
Health note: this breed is affected by health concerns linked to its body shape. Read the health section and choose a breeder who health-tests and breeds for moderate features.
Is this breed right for you?
10 questions · live resultHistory and Origin
Small spaniels were favorites of the English court in the 1600s, especially King Charles II. Over time, breeders favored flatter faces, producing the modern King Charles Spaniel, known in the US as the English Toy Spaniel. The name Cavalier refers to the royalist supporters of Charles I and II.
In the 1920s, American Roswell Eldridge offered a prize at Crufts for spaniels with longer noses, like those in old paintings. Breeders took up the challenge, and the Cavalier was recognized by The Kennel Club in 1945. The AKC recognized it in 1995. Colors are Blenheim, tricolor, black and tan, and ruby.
Size, Colors and Coat
The Cavalier is a small, well-balanced spaniel standing about 12 to 13 inches at the shoulder and weighing roughly 12 to 18 lb. It should look graceful rather than heavy, with a slightly rounded skull, a full muzzle of moderate length and large, round, dark eyes that give the breed its soft expression. Long, set-high ears frame the face.
The coat is silky and of moderate length, straight or with a slight wave, with feathering on the ears, chest, legs, feet and tail. Show standards ask for no trimming apart from the feet.
Four colors are recognized:
- Blenheim: chestnut markings on pearly white, ideally with a chestnut spot on the top of the head
- Tricolor: black and white with tan points
- Black and tan: black with tan markings
- Ruby: solid rich red
Males and females are close in size; males often carry a little more coat and a broader head.
Temperament and Personality
Cavaliers are affectionate, gentle and eager to please. They usually get along with children, other dogs and even cats, and they greet strangers warmly. That friendliness makes them poor guard dogs.
They are very people-oriented and often struggle when left alone for long periods. Some retain a spaniel's interest in birds and squirrels.
Cavaliers are popular therapy dogs because of their calm, affectionate manner. They read their owners' moods well and like to be close, often following people from room to room and settling on laps whenever possible.
Is the Cavalier King Charles Spaniel Good for First-Time Owners?
Yes, temperament-wise the Cavalier is one of the easiest breeds for a first dog. It is gentle, forgiving of beginner mistakes and keen to please, so basic manners and house training usually go smoothly with rewards.
The real learning curve is health. A first-time owner needs to research breeders carefully, ask for cardiologist heart certificates and MRI results, and plan for regular vet checks. Novices should also know that a Cavalier wants company most of the day and that its coat needs brushing several times a week.
Is the Cavalier King Charles Spaniel a Good Apartment Dog?
Yes. Its small size, moderate exercise needs and generally quiet indoor manner make the Cavalier one of the better choices for apartment living.
A couple of daily walks plus play indoors usually keep it content. Because many Cavaliers develop heart disease, gentle routines without lots of stairs can also suit older dogs. The main apartment challenge is loneliness: a Cavalier left alone all day may whine or bark, which neighbors notice. Some also follow scents eagerly, so leash walks in the city are a must.
Do Cavalier King Charles Spaniels Bark a Lot?
No, most Cavaliers are moderate barkers. They may announce the doorbell or a visitor, then usually switch straight to greeting mode.
Excessive barking or whining in this breed is most often linked to being left alone, since Cavaliers are strongly attached to their people. Building up alone time gradually from puppyhood, using a food puzzle when you leave and keeping departures low-key all help. A Cavalier that suddenly becomes vocal, restless or sensitive around the neck should see a vet, as that can point to pain from syringomyelia rather than a behavior issue.
Exercise and Training
Cavaliers adapt to their household's pace. Daily walks and play are enough, and many enjoy longer hikes. They are easy to train with gentle, reward-based methods and do well in rally, agility and therapy work.
Many love sniffing and following scents, so recall training is important; keep them on a leash near roads. They gain weight easily, so measure meals and count treats toward the daily food allowance. Watch for exercise intolerance, coughing or reluctance to walk, which can be early signs of heart disease.
Grooming and Shedding
The silky, medium-length coat with feathering on ears, legs and tail needs brushing several times a week, ideally daily, to prevent mats. Trim the hair between the paw pads. The long ears need regular checks and cleaning. Shedding is moderate.
Many owners keep the feathering on the feet trimmed short for easier cleaning after muddy walks. Brush teeth several times a week, since small breeds are prone to dental disease, and wipe the long ears after meals so food does not collect in the fringes.
Feeding and Nutrition
Weight control is the single most important feeding goal for a Cavalier. Most are enthusiastic eaters, and extra pounds add strain to a heart that may develop mitral valve disease and to knees prone to luxating patellas. Weigh your dog regularly and check that you can feel the ribs easily.
- Feed adults two measured meals a day; puppies usually do best on three or four small meals until around six months.
- Take training treats from the daily ration and use tiny pieces. Vegetables such as green beans or cucumber make low-calorie rewards.
- A shallow, narrow bowl or a snood keeps the long ear feathering out of food.
Small mouths are prone to tartar, so pair daily tooth brushing with chew items your vet approves. If your Cavalier is diagnosed with heart disease, your vet may advise changes such as watching salty treats and table scraps; follow that guidance rather than changing the diet on your own.
| Adult weight | Less active | Typical adult | Very active |
|---|---|---|---|
| 12 lb | 350 kcal | 400 kcal | 500 kcal |
| 18 lb | 470 kcal | 540 kcal | 680 kcal |
Estimates use the resting energy formula veterinarians work with (70 × body weight in kg0.75) and standard activity factors. Use the feeding guide on your food as a starting point and adjust to body condition. Puppies, seniors, pregnant animals and pets that need to lose weight have different needs, so ask your vet.
Health and Lifespan
Cavaliers typically live 12 to 15 years, but health problems are common:
- Mitral valve disease (MVD): a leading cause of death in the breed, often developing in middle age
- Chiari-like malformation and syringomyelia: the skull is too small for the brain, which can cause fluid-filled cavities in the spinal cord. Many Cavaliers have the malformation, and some develop pain, neck scratching or sensitivity
- Eye problems, luxating patellas and episodic falling syndrome
Look for breeders who follow heart and MRI screening schemes and can show results for parents and grandparents.
Cavalier King Charles Spaniel Price and Cost of Ownership
Typical breeder price in the US$2,000 to $4,000
A Cavalier puppy from a reputable US breeder typically costs around $2,000 to $4,000. Prices vary by breeder, region and lines, and breeders who do full cardiologist heart screening and MRI scans on their breeding dogs often sit at the higher end. A very cheap Cavalier usually means those tests were skipped.
Breed rescues regularly place adult Cavaliers, often for a modest adoption fee, and many come with a known health history.
Ongoing costs are driven by health more than size:
- Annual heart checks, and medication if mitral valve disease develops
- Possible neurology work-up for syringomyelia
- Pet insurance taken out early, before any heart murmur is recorded
- Regular dental care and occasional professional grooming
Is the Cavalier King Charles Spaniel Right for You?
Cavaliers suit families, retirees and first-time owners who are home a lot and want an affectionate dog. Budget for veterinary care, cardiology checks and possibly pet insurance. A well-screened breeder or a rescue organization is key.
When buying a puppy, ask to see heart certificates for both parents issued by a cardiologist, MRI results where available, and information on how long older dogs in the line have lived. A breeder who answers these questions openly is a good sign.
Cavalier King Charles Spaniel Traits at a Glance
Cavalier King Charles Spaniel FAQ
Are Cavalier King Charles Spaniels good family dogs?
Yes. They are known for being gentle with children and friendly with other pets.
How big do Cavaliers get?
They stand about 12 to 13 inches tall and weigh roughly 12 to 18 lb.
What health problems do Cavaliers have?
Mitral valve disease and syringomyelia are the main concerns. Eye and knee problems also occur.
Do Cavaliers shed?
Moderately. Regular brushing keeps the coat tidy and reduces loose hair.
Can Cavaliers be left alone?
They prefer company and may struggle with long stretches alone.
How long do Cavaliers live?
Typically 12 to 15 years.





