The history of the Cavalier King Charles Spaniel breed
The Cavalier King Charles Spaniel is a breed steeped in royal history, artistic heritage, and centuries of companionship. Loved today for its affectionate nature and gentle temperament, the Cavalier’s story stretches back hundreds of years across the courts of Europe (Nicholas, 1906; Shaw, 1879).
Historical Origins of the Cavalier King Charles Spaniel
The Cavalier King Charles Spaniel is a breed with deep historical roots in European royal and aristocratic life. Historical and artistic records indicate that small toy spaniels were present in royal courts as early as the 15th century, where they were valued primarily as companion animals rather than working dogs (Shaw, 1879; Nicholas, 1906). These dogs are frequently depicted in paintings alongside nobility, reinforcing their role as symbols of status, affection, and refinement (Nicholas, 1906).
Early Toy Spaniels in European Courts
Toy spaniels were widely kept across European courts, particularly in England, France, and the Low Countries, where they were favoured as lapdogs by aristocratic women and royalty (Shaw, 1879). Contemporary accounts and artistic depictions suggest these early spaniels were bred for temperament and companionship, providing warmth, comfort, and social bonding rather than fulfilling any hunting or sporting function (Nicholas, 1906). Their small size and gentle nature made them especially suitable for indoor life within royal households (Nicholas, 1906).
The Influence of King Charles II
The modern Cavalier King Charles Spaniel derives its name and identity largely from its association with King Charles II of England during the 17th century. Historical accounts describe Charles II as being exceptionally devoted to his spaniels, allowing them to accompany him in both public and private settings, including the royal court and Parliament (The Kennel Club, n.d.). This close association led to the dogs becoming known as “King Charles Spaniels,” with the term “Cavalier” later reflecting the monarch’s supporters during the English Civil War (The Cavalier King Charles Spaniel Club, n.d.).
At this time, toy spaniels were characterised by longer muzzles, flatter skulls, and a more athletic build than those seen in later centuries, features that closely align with the modern Cavalier King Charles Spaniel (American Kennel Club, n.d.; Shaw, 1879).
Changes in Appearance and Breed Divergence
By the late 17th and early 18th centuries, selective breeding practices shifted in response to changing fashions. Toy spaniels were increasingly interbred with flatter-nosed breeds, resulting in a shorter muzzle, domed skull, and more compact appearance (Shaw, 1879; The Kennel Club, n.d.). Over time, this breeding trend led to the establishment of what is now recognised as the King Charles Spaniel (also known in some regions as the English Toy Spaniel), while the original longer-nosed type gradually declined (The Cavalier King Charles Spaniel Club, n.d.).
This divergence ultimately produced two distinct breeds, each with its own physical characteristics and breed standards (The Kennel Club, n.d.).
The Revival of the Cavalier King Charles Spaniel
Interest in restoring the original “old type” toy spaniel emerged in the early 20th century. A key figure in this revival was Roswell Eldridge, an American dog enthusiast who, in 1926, offered a monetary prize at the Crufts Dog Show for spaniels resembling those depicted in portraits from the era of Charles II (American Kennel Club, n.d.; The Kennel Club, n.d.). Eldridge specifically sought dogs with a longer muzzle and flatter skull, aiming to re-establish the historical type.
Although Eldridge died before the breed was formally recognised, his efforts inspired British breeders to continue the restoration. Their work culminated in the official recognition of the Cavalier King Charles Spaniel as a separate breed by The Kennel Club in 1945 (The Kennel Club, n.d.).
Cavalier vs King Charles Spaniel
The Cavalier King Charles Spaniel and the King Charles Spaniel are often confused, but they are distinct breeds. Cavaliers are characterised by a flatter skull, a longer muzzle, and larger, more open eyes (American Kennel Club, n.d.; The Kennel Club, n.d.). In contrast, the King Charles Spaniel has a domed head, shorter face, and a more compact build (The Cavalier King Charles Spaniel Club, n.d.).
A Companion Breed at Heart
Despite changes in appearance over time, the Cavalier King Charles Spaniel has consistently been bred for companionship. Modern breed descriptions continue to emphasise the Cavalier’s affectionate, gentle, and sociable temperament, reflecting the same qualities that made its ancestors valued lapdogs in royal households centuries ago (American Kennel Club, n.d.; Nicholas, 1906). This enduring emphasis on human companionship explains the breed’s continued popularity as a family pet, therapy dog, and emotional support animal (American Kennel Club, n.d.).
Responsible Breeding and the Future of the Breed
As the popularity of the Cavalier King Charles Spaniel has grown, so too has the importance of responsible and ethical breeding. Cavaliers are widely recognised in veterinary literature as being predisposed to several inherited health conditions, most notably myxomatous mitral valve disease (MMVD), a progressive heart condition that affects a high proportion of the breed, often at a younger age than in other dogs (Summers et al., 2015; Axelsson et al., 2021). Neurological disorders, including Chiari-like malformation and syringomyelia, are also well documented and can have a significant impact on welfare and quality of life (Lewis et al., 2010; Rutherford et al., 2012; Bach et al., 2024).
Research has demonstrated that both MMVD and syringomyelia have a genetic component, highlighting the critical role that breeding decisions play in either reducing or perpetuating disease within the breed (Lewis et al., 2010; Axelsson et al., 2021). Responsible breeders therefore have a vital role in safeguarding the long-term health of Cavaliers by prioritising health screening, genetic diversity, and sound temperament rather than appearance alone.
Ethical breeding practices include appropriate health testing of breeding dogs, careful selection of mating pairs, limiting the number of litters, and ensuring puppies are raised in environments that support early socialisation and behavioural development. Veterinary population studies show that Cavaliers experience higher rates of cardiac and neurological disorders than many other breeds, reinforcing the importance of informed and conscientious breeding strategies (Summers et al., 2015).
Sadly, irresponsible breeding practices and puppy farming have contributed to many Cavaliers entering rescue, often due to chronic health conditions, poor early care, or owners being unprepared for the long-term needs of the breed. Supporting reputable breeders—or choosing to adopt from rescue—helps reduce demand for unethical breeding and promotes a culture in which Cavaliers are valued for their welfare rather than profit.
By promoting responsible breeding and informed ownership, it is possible to honour the Cavalier King Charles Spaniel’s rich history while safeguarding its future as a healthier, happier companion breed.
References
American Kennel Club. (n.d.). Cavalier King Charles spaniel. https://www.akc.org
Axelsson, E., Ljungvall, I., Bhoumik, P., Conn, L. B., Muren, E., Ohlsson, Å., Olsen, L. H., Engdahl, K., Hagman, R., & Hanson, J. (2021). The genetic consequences of dog breed formation: Accumulation of deleterious genetic variation and fixation of mutations associated with myxomatous mitral valve disease in Cavalier King Charles spaniels. PLOS Genetics, 17(10), e1009726. https://doi.org/10.1371/journal.pgen.1009726
Bach, T., Stougaard, C. L., Thøfner, M. S., Reimann, M. J., Westrup, U., Koch, J., Fredholm, M., Martinussen, T., Berendt, M., & Olsen, L. H. (2024). Relationship between syringomyelia and myxomatous mitral valve disease in Cavalier King Charles spaniels. Journal of Veterinary Internal Medicine, 38(2), 904–912. https://doi.org/10.1111/jvim.16984
The Cavalier King Charles Spaniel Club. (n.d.). History of the Cavalier King Charles spaniel. https://www.cavalierclub.co.uk
The Kennel Club. (n.d.). Cavalier King Charles spaniel breed standard. https://www.thekennelclub.org.uk
Lewis, T., Rusbridge, C., Knowler, P., Blott, S., & Woolliams, J. A. (2010). Heritability of syringomyelia in Cavalier King Charles spaniels. The Veterinary Journal, 183(3), 345–347. https://doi.org/10.1016/j.tvjl.2009.01.018
Nicholas, A. K. (1906). The book of the dog. T. C. & E. C. Jack.
Rutherford, L., Henley, W., Rusbridge, C., & Wessmann, A. (2012). Questionnaire-based behaviour analysis of Cavalier King Charles spaniels: Prevalence of Chiari-like malformation and syringomyelia. Applied Animal Behaviour Science, 135(1–2), 95–105. https://doi.org/10.1016/j.applanim.2011.10.007
Shaw, G. V. (1879). The illustrated book of the dog. Cassell, Petter & Galpin.
Summers, J. F., O’Neill, D. G., Church, D. B., Thomson, P. C., McGreevy, P. D., & Brodbelt, D. C. (2015). Prevalence of disorders recorded in Cavalier King Charles spaniels attending primary-care veterinary practices in England. Canine Genetics and Epidemiology, 2, Article 4. https://doi.org/10.1186/s40575-015-0020-4
