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Cavalier King Charles Spaniel

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Cavalier King Charles Spaniel community

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About the Cavalier King Charles Spaniel

The Cavalier King Charles Spaniel is one of the UK's most popular toy breeds, consistently in the top ten most registered with the Kennel Club. It is an affectionate, gentle and adaptable companion with a temperament that suits a wide range of households. It is also a breed that carries some of the most significant inherited health conditions of any dog in the UK, and this fact should be the starting point for any research into the breed. The Cavalier's appeal is genuine and well-founded. They are warm, sociable dogs that bond closely with their family, get on well with children, other dogs and typically cats, and adapt to a range of living situations from small flats to larger homes. Their exercise needs are moderate rather than demanding. Their temperament is consistently gentle and they rarely show aggression. For the right owner who goes in fully informed and financially prepared, the Cavalier is an excellent companion. The health picture, however, must be confronted honestly. Mitral Valve Disease (MVD) affects the vast majority of the breed by middle to older age, progressively degrading the mitral heart valve and ultimately causing heart failure. Research published in veterinary journals consistently shows that most Cavaliers will have some degree of murmur by age ten and many earlier. Responsible breeding schemes, including the British Veterinary Cardiac Society's MVD scheme, require dogs to meet cardiac clearance standards before breeding. Buyers must ask for evidence that both parents have been screened. Syringomyelia (SM), caused by the skull being too small for the brain, causes pain and neurological symptoms. The MRI Scheme assesses breeding dogs. Again, both parents should be screened before any puppy is purchased. The consequence of these conditions is that insurance for a Cavalier is among the highest of any small breed. Comprehensive, non-time-limited lifetime cover is essential: this is not a breed where you can self-insure or rely on cheaper time-limited policies. Monthly premiums of £50 to £100 are typical. Budget also for regular cardiac auscultation and, when your vet recommends it, echocardiography. Purchase prices from KC-registered, health-tested breeders typically range from £1,000 to £2,000. Be very sceptical of cheaper puppies where cardiac and neurological screening cannot be evidenced. The Cavalier King Charles Spaniel Club Rescue rehomes dogs nationally. This is a breed that rewards serious preparation with genuine, warm companionship. Go in with full knowledge of the health and financial picture, buy from a breeder who screens rigorously, insure comprehensively from day one, and you will have one of the most devoted companion dogs available.

AffectionateGentleAdaptableEager to pleaseGood with children
Full Cavalier King Charles Spaniel breed guide

Quick facts

Sizesmall
Weight58 kg
Lifespan914 years
Monthly cost£100–£160
First-time owner
4/5
Family suitability
5/5

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QuestionFrom the W&W Team

How much exercise does your Cavalier King Charles Spaniel really need each day?

Thirty to 45 minutes daily is the right amount for a healthy adult Cavalier, and I split it across two walks rather than one longer session. My Cavalier enjoys a morning stroll with plenty of sniffing time and an evening walk more than a single long outing. She is not a high-endurance dog, and pushing her beyond what she needs does not benefit her. In summer I am careful about heat. She has a moderate muzzle length rather than a severely flat face, but she can still struggle in hot weather, so I avoid midday walks from June onwards. The most important thing to understand is that exercise needs can change significantly if your Cavalier develops mitral valve disease. If your vet has identified a murmur and placed your dog on cardiac medication, follow their specific guidance on exercise intensity. Do not assume what worked before is still appropriate.

30 June 2026

QuestionFrom the W&W Team

Any health issues to watch for with Cavalier King Charles Spaniels?

Two conditions dominate and every prospective owner needs to understand both before they buy. Mitral valve disease (MVD) affects the majority of Cavaliers by age ten. It is progressive and eventually leads to heart failure. This is not a scare story, it is a documented reality of the breed. The British Veterinary Cardiac Society scheme sets out requirements for breeding dogs, and both parents should meet those criteria. Ask the breeder for the cardiac certificates and verify them. The second condition is syringomyelia, a painful neurological condition caused by the skull being too small for the brain. Signs include scratching at the neck and shoulders in the air without making contact with the skin. The MRI screening scheme exists for this reason. Eye conditions and hip problems also occur. Monthly insurance for a Cavalier typically runs to £50 to £100. This is not a breed to insure lightly or to underinsure.

30 June 2026

QuestionFrom the W&W Team

What do you wish you'd known before getting a Cavalier King Charles Spaniel?

I wish I had started building separation tolerance much earlier. I brought my Cavalier home during a period when I was at home a lot, and she was with me constantly for the first four months. It felt kind. What I was actually doing was setting up a dog who could not cope with being alone at all. When circumstances changed and I needed to be out for a few hours, the anxiety she showed was distressing for both of us. A Cavalier's attachment to its people is one of the breed's most appealing qualities, but it is also the thing that makes them vulnerable if you do not actively prepare them for independence. Gradual, positive alone time from the very first week. A crate introduced as a calm, safe space. Short departures before long ones. None of that is unkind. It is responsible preparation for a dog that genuinely wants to be with you all the time.

30 June 2026

QuestionFrom the W&W Team

What do you feed your Cavalier King Charles Spaniel, and why?

I feed a high-quality dry complete food, around 150g daily split into two meals, and I weigh it rather than eyeballing it. Cavaliers have a real tendency toward weight gain, and in a breed with significant cardiac risk, excess weight is not just cosmetic. An overweight Cavalier with MVD has a worse prognosis than a lean one, and that matters to me practically. I check her body condition by feel every few weeks: you should be able to feel the ribs clearly without pressing. Training treats are tiny and counted within the daily allowance, not additional to it. Grapes and raisins are toxic to dogs, onion and garlic likewise. I keep those well away from her. She gets daily toothbrushing with dog-safe toothpaste because dental disease is common in Cavaliers and the consequences of untreated dental disease go beyond the mouth. A good dry kibble supports dental hygiene compared to wet food.

30 June 2026

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