Many Blenheim Cavaliers have a chestnut spot between their ears. The FCI standard calls this lozenge a highly prized, unique breed feature. Large dark eyes and a gentle expression complete the face. Behind it is a dog with a wonderful temperament and a body dependent on careful breeding.
| FCI | Group 9 (Companion and Toy Dogs), Section 7 English Toy Spaniels, Standard No. 136, without working trial |
|---|---|
| Country of origin | Great Britain |
| Size (height at the withers) | not specified in the FCI standard |
| Weight | 5.4 to 8 kg; a small, well-balanced dog within this range is desired |
| Life expectancy | median 11.8 years in a UK analysis of 584,734 dogs (McMillan et al. 2024) |
| Coat | long, silky, without curls, slight wave permitted, abundant feathering, untrimmed |
| Colours in the standard | Black and Tan, Ruby (solid rich red), Blenheim (chestnut patches on a pearl-white ground), Tricolour; other colours not permitted |
Origins
The Cavalier comes from Great Britain. The FCI places it in the English Toy Spaniel section, and the standard describes its purpose as companion and toy dog. The current standard contains no historical summary. It describes an active, graceful, well-balanced dog with a gentle expression.
Temperament
According to the standard, sporting, affectionate, absolutely fearless, cheerful and friendly, without aggression or nervousness. In daily life, the Cavalier adapts well as long as they can stay with their people.
Exercise and activity
This is not solely a sofa dog; the standard explicitly calls the breed sporting. Walks, sniffing games and short training sessions are beneficial. If exertion causes unusually rapid tiredness or breathlessness, ask your vet to investigate.
Grooming
The silky coat and feathered ears need brushing two to three times weekly. Check the long hanging ears regularly and keep them clean.
Health
An honest assessment matters here. A Royal Veterinary College VetCompass analysis of 1,749 Cavaliers attending English practices found heart murmur the most common diagnosis at 30.9 percent. The authors identify mitral valve disease (MVD) as a particular breed concern (Summers et al. 2015). Syringomyelia adds to the picture: fluid-filled cavities in the spinal cord that can cause pain. In Germany, MRI found syringomyelia in 163 of 339 symptom-free Cavaliers, or 48.1 percent (Schulze et al. 2018). In a complete Danish birth cohort, 15.4 percent had symptoms (Thøfner et al. 2015). Ask for the parents’ heart results and MRI findings.
Who is a Cavalier King Charles Spaniel right for?
People wanting a friendly, adaptable companion, including as a first dog, who firmly budget for regular heart checks and possible treatment.
Who should look elsewhere?
Anyone choosing by the face alone and unable to build veterinary savings. If you do not want to ask a breeder for health findings, avoid this breed.
Read what heart and spinal-cord conditions mean day to day in the detailed Cavalier King Charles Spaniel breed profile. Assess suitability through the breed quiz or our book “Which Dog REALLY Suits You?” (book in German). For the first weeks, the free Puppy Starter Pack helps. Find other FCI-based breed profiles in the Dog Breed Encyclopedia.
Further reading
- Cavalier King Charles Spaniel: lovely nature, troubled heart
- Pug: what a nose bred away means in everyday life
- Older dog, new rules: how to give your senior their best years
Sources, accessed on 20.10.2026: FCI Standard No. 136 Cavalier King Charles Spaniel (fci.be, English version dated 06.10.2026); Summers JF et al., Prevalence of disorders recorded in Cavalier King Charles Spaniels attending primary-care veterinary practices in England, Canine Genetics and Epidemiology 2015; Schulze S et al., Prevalence of syringomyelia in clinically unaffected Cavalier King Charles Spaniels in Germany (2006-2016), Tierärztliche Praxis K 2018; Thøfner MS et al., Prevalence and heritability of symptomatic syringomyelia in Cavalier King Charles Spaniels, Journal of Veterinary Internal Medicine 2015; McMillan KM et al., Longevity of companion dog breeds: those at risk from early death, Scientific Reports 2024.
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