Our latest project, The Cavalier Composition: A Practical Guide to Cavalier Health, will be published in 2026.
Royal Flush Cavaliers: Breeding, Health, and Other Commitments
Breeding Cavalier King Charles Spaniels is a lifelong responsibility that demands thoughtful planning, continued learning, and honesty about what modern testing can and cannot guarantee. With more than 30 years of experience in breeding, stud service, and rescue, I approach this work with a strong focus on welfare, sound decision-making, and responsible breeding practices. As a breeder, expert contributor, published author, podcast creator of Cavs Coffee and Cocktails™ on Spotify, and owner-agent for Covergirl Cavaliers™, I remain committed to education, transparency, and maintaining the integrity of this remarkable breed. In addition to my hands-on work with dogs, I have developed and trademarked several Cavalier-specific brands that reflect my long-standing investment in supporting both the breed and its community.
Historical Cavaliers vs. Modern Cavaliers
The Cavalier King Charles Spaniel has a unique and fascinating history rooted in the small spaniels beloved by King Charles II. Following his death, the original toy spaniels were gradually bred to match changing fashion trends of the time. Crosses with breeds such as Pugs and other short-faced dogs influenced the development of what became known as the English Toy Spaniel (King Charles Spaniel), which retained similar colors and charm but differed significantly from the longer-nosed dogs seen in historic paintings.
In the 1920s, American enthusiast Roswell Eldridge offered a prize at Crufts to encourage breeders to recreate the earlier “old-type” spaniels depicted in classical artwork, dogs with a more elongated muzzle, flatter skull, and more athletic outline. The modern Cavalier King Charles Spaniel was developed from this preservation effort, intentionally returning to a slightly longer nose and more moderate structure compared to the brachycephalic English Toy Spaniel. Today’s Cavaliers reflect a balance between historical inspiration and responsible modern breeding practices, honoring the breed’s past while prioritizing health, soundness, and temperament for the future.
World War II and the Modern Cavalier Gene Pool
Like many breeds in Europe, the Cavalier King Charles Spaniel faced an uncertain future during World War II. Food shortages, wartime restrictions, and the realities of survival meant that even dedicated breeders were forced to make heartbreaking decisions, and breeding programs across England were dramatically reduced. One of the most influential kennels preserving the early “old-type” Cavaliers dwindled from more than sixty dogs to only a small surviving group, from which much of the post-war rebuilding effort began.
As dedicated preservation breeders worked to restore the breed after the war, these remaining dogs formed a significant part of the foundation for the modern Cavalier population. Because so many present-day Cavaliers trace back to this limited post-war rebuilding period, the breed today reflects a relatively small founding population. This historical bottleneck contributes to reduced genetic diversity and helps explain why inherited conditions remain a concern within the breed.
Understanding this history is essential when discussing health testing and breeding ethics. No single test or screening method can completely eliminate inherited risk in a breed rebuilt from such a narrow base. Instead, responsible breeding focuses on thoughtful selection, comprehensive health evaluation, pedigree knowledge, and lifelong support for every puppy produced, honoring both the resilience of the breed’s past and the responsibility we carry for its future.
Cardiac Health & Ongoing Monitoring
Heart health is one of the most important considerations in this breed. All of our breeding dogs receive regular cardiac evaluations. Our dogs receive annual cardiac screenings, including ECG monitoring, to evaluate heart rhythm and overall function. These exams are repeated annually because cardiac status can change with age. While clear cardiac evaluations are important, they represent a snapshot in time, which is why we prioritize ongoing monitoring rather than relying on a single result.
Genetic Testing & Responsible Use of DNA
DNA testing is a valuable tool because results do not change over a dog’s lifetime and can identify specific inherited mutations that are known and testable. However, DNA testing alone does not guarantee a completely healthy dog or litter. Many important conditions in Cavaliers, especially mitral valve disease, are complex, polygenic traits that cannot currently be predicted by a single genetic test. We use DNA results alongside health exams, pedigree knowledge, and careful breeding decisions to reduce risk rather than promise certainty.
Ophthalmology & Eye Health Monitoring
Eye health is evaluated on an ongoing basis as part of our routine veterinary care. Our veterinarian performs regular eye checks during annual wellness examinations to monitor overall ocular health. In addition, our dogs are examined by a board-certified veterinary ophthalmologist for official CAER (Companion Animal Eye Registry) evaluations. Combining routine veterinary monitoring with specialist examinations allows us to track eye health over time and make informed breeding decisions.
Orthopedic Evaluation & Structural Soundness
Alongside cardiac and ophthalmic care, our board-certified veterinarian, a published author with specialized expertise in mobility, rehabilitation, and regenerative orthopedic medicine, conducts comprehensive annual orthopedic evaluations. These assessments include careful examination of knees, elbows, and patellas to monitor joint stability, movement, and overall structural integrity as our dogs mature. Regular monitoring allows us to observe subtle changes over time and supports thoughtful, informed breeding decisions centered on long-term soundness and musculoskeletal health.
Temperament & Development
Health includes more than physical testing. Stable temperament, resilience, and sound behavior are essential qualities in a Cavalier. Our breeding dogs are evaluated for temperament, and our puppies are raised with early socialization, structured exposure, and age-appropriate developmental practices designed to support confident, well-adjusted companions.
Genetic Diversity & Thoughtful Pedigree Planning
Because the modern breed traces back to a small group of foundation dogs, careful pedigree research and thoughtful pairing decisions are essential. We study lineage health history, structure, and temperament to help balance genetic diversity while preserving breed type and long-term wellness.
Age-Appropriate Breeding Practices
We believe maturity matters. Breeding dogs are evaluated over time and are not bred until they are old enough for meaningful health screening. Continued re-evaluation as dogs age helps guide responsible decisions rather than relying solely on early clearances.
Honest Expectations & Lifelong Support
Even with careful screening and responsible breeding practices, no breeder can promise a completely risk-free dog. Our focus is on reducing risk through knowledge, transparency, and thoughtful decision-making. We offer a five-year cardiac health guarantee and remain available to our puppy families for guidance and support throughout the life of their dog, valuing open communication about long-term health so we can continue learning and refining our program.
Our commitment is simple: to combine modern health testing, experienced veterinary oversight, sound temperament selection, and informed breeding decisions to raise Cavaliers that are healthy, balanced, and deeply loved members of their families. This same dedication to education extends into my ongoing work on The Cavalier Composition: A Practical Cavalier Health, developed in collaboration with expert contributor Dr. Ashraf Gomaa, DVM, a project to be published in 2026, that reflects my continued focus on sharing practical, experience-based knowledge about Cavalier health, structure, and responsible care.
Breeding Cavalier King Charles Spaniels is a lifelong responsibility that demands thoughtful planning, continued learning, and honesty about what modern testing can and cannot guarantee. With more than 30 years of experience in breeding, stud service, and rescue, I approach this work with a strong focus on welfare, sound decision-making, and responsible breeding practices. As a breeder, expert contributor, published author, podcast creator of Cavs Coffee and Cocktails™ on Spotify, and owner-agent for Covergirl Cavaliers™, I remain committed to education, transparency, and maintaining the integrity of this remarkable breed. In addition to my hands-on work with dogs, I have developed and trademarked several Cavalier-specific brands that reflect my long-standing investment in supporting both the breed and its community.
Historical Cavaliers vs. Modern Cavaliers
The Cavalier King Charles Spaniel has a unique and fascinating history rooted in the small spaniels beloved by King Charles II. Following his death, the original toy spaniels were gradually bred to match changing fashion trends of the time. Crosses with breeds such as Pugs and other short-faced dogs influenced the development of what became known as the English Toy Spaniel (King Charles Spaniel), which retained similar colors and charm but differed significantly from the longer-nosed dogs seen in historic paintings.
In the 1920s, American enthusiast Roswell Eldridge offered a prize at Crufts to encourage breeders to recreate the earlier “old-type” spaniels depicted in classical artwork, dogs with a more elongated muzzle, flatter skull, and more athletic outline. The modern Cavalier King Charles Spaniel was developed from this preservation effort, intentionally returning to a slightly longer nose and more moderate structure compared to the brachycephalic English Toy Spaniel. Today’s Cavaliers reflect a balance between historical inspiration and responsible modern breeding practices, honoring the breed’s past while prioritizing health, soundness, and temperament for the future.
World War II and the Modern Cavalier Gene Pool
Like many breeds in Europe, the Cavalier King Charles Spaniel faced an uncertain future during World War II. Food shortages, wartime restrictions, and the realities of survival meant that even dedicated breeders were forced to make heartbreaking decisions, and breeding programs across England were dramatically reduced. One of the most influential kennels preserving the early “old-type” Cavaliers dwindled from more than sixty dogs to only a small surviving group, from which much of the post-war rebuilding effort began.
As dedicated preservation breeders worked to restore the breed after the war, these remaining dogs formed a significant part of the foundation for the modern Cavalier population. Because so many present-day Cavaliers trace back to this limited post-war rebuilding period, the breed today reflects a relatively small founding population. This historical bottleneck contributes to reduced genetic diversity and helps explain why inherited conditions remain a concern within the breed.
Understanding this history is essential when discussing health testing and breeding ethics. No single test or screening method can completely eliminate inherited risk in a breed rebuilt from such a narrow base. Instead, responsible breeding focuses on thoughtful selection, comprehensive health evaluation, pedigree knowledge, and lifelong support for every puppy produced, honoring both the resilience of the breed’s past and the responsibility we carry for its future.
Cardiac Health & Ongoing Monitoring
Heart health is one of the most important considerations in this breed. All of our breeding dogs receive regular cardiac evaluations. Our dogs receive annual cardiac screenings, including ECG monitoring, to evaluate heart rhythm and overall function. These exams are repeated annually because cardiac status can change with age. While clear cardiac evaluations are important, they represent a snapshot in time, which is why we prioritize ongoing monitoring rather than relying on a single result.
Genetic Testing & Responsible Use of DNA
DNA testing is a valuable tool because results do not change over a dog’s lifetime and can identify specific inherited mutations that are known and testable. However, DNA testing alone does not guarantee a completely healthy dog or litter. Many important conditions in Cavaliers, especially mitral valve disease, are complex, polygenic traits that cannot currently be predicted by a single genetic test. We use DNA results alongside health exams, pedigree knowledge, and careful breeding decisions to reduce risk rather than promise certainty.
Ophthalmology & Eye Health Monitoring
Eye health is evaluated on an ongoing basis as part of our routine veterinary care. Our veterinarian performs regular eye checks during annual wellness examinations to monitor overall ocular health. In addition, our dogs are examined by a board-certified veterinary ophthalmologist for official CAER (Companion Animal Eye Registry) evaluations. Combining routine veterinary monitoring with specialist examinations allows us to track eye health over time and make informed breeding decisions.
Orthopedic Evaluation & Structural Soundness
Alongside cardiac and ophthalmic care, our board-certified veterinarian, a published author with specialized expertise in mobility, rehabilitation, and regenerative orthopedic medicine, conducts comprehensive annual orthopedic evaluations. These assessments include careful examination of knees, elbows, and patellas to monitor joint stability, movement, and overall structural integrity as our dogs mature. Regular monitoring allows us to observe subtle changes over time and supports thoughtful, informed breeding decisions centered on long-term soundness and musculoskeletal health.
Temperament & Development
Health includes more than physical testing. Stable temperament, resilience, and sound behavior are essential qualities in a Cavalier. Our breeding dogs are evaluated for temperament, and our puppies are raised with early socialization, structured exposure, and age-appropriate developmental practices designed to support confident, well-adjusted companions.
Genetic Diversity & Thoughtful Pedigree Planning
Because the modern breed traces back to a small group of foundation dogs, careful pedigree research and thoughtful pairing decisions are essential. We study lineage health history, structure, and temperament to help balance genetic diversity while preserving breed type and long-term wellness.
Age-Appropriate Breeding Practices
We believe maturity matters. Breeding dogs are evaluated over time and are not bred until they are old enough for meaningful health screening. Continued re-evaluation as dogs age helps guide responsible decisions rather than relying solely on early clearances.
Honest Expectations & Lifelong Support
Even with careful screening and responsible breeding practices, no breeder can promise a completely risk-free dog. Our focus is on reducing risk through knowledge, transparency, and thoughtful decision-making. We offer a five-year cardiac health guarantee and remain available to our puppy families for guidance and support throughout the life of their dog, valuing open communication about long-term health so we can continue learning and refining our program.
Our commitment is simple: to combine modern health testing, experienced veterinary oversight, sound temperament selection, and informed breeding decisions to raise Cavaliers that are healthy, balanced, and deeply loved members of their families. This same dedication to education extends into my ongoing work on The Cavalier Composition: A Practical Cavalier Health, developed in collaboration with expert contributor Dr. Ashraf Gomaa, DVM, a project to be published in 2026, that reflects my continued focus on sharing practical, experience-based knowledge about Cavalier health, structure, and responsible care.