Health Testing for Cavalier King Charles Spaniels
Pictured: Austen
Photo credit: Bronwen Gordon
The Cavalier King Charles Spaniel is one of the world's most affectionate and beloved companion dogs. Like all pedigree breeds, however, Cavaliers are predisposed to the risk of certain inherited health conditions that responsible breeders work hard to reduce through careful health screening and selective breeding.
Health testing is one of the most important tools available for protecting the future of the breed. While no breeder can guarantee a puppy will never develop a health problem, comprehensive health screening significantly improves the information available when making breeding decisions.
Whether you are searching for a Cavalier puppy, considering breeding your dog or simply wanting to better understand breed health, this guide explains the most important health tests recommended for Cavalier King Charles Spaniels.
What Is Health Testing?
Health testing involves a series of veterinary examinations and diagnostic tests designed to identify inherited diseases or conditions before breeding.
The goals of health testing are to:
Improve the long-term health of the breed.
Reduce the incidence of inherited diseases.
Support informed breeding decisions.
Protect future generations of Cavaliers.
Provide puppy buyers with greater confidence.
Health testing does not guarantee that a puppy will never develop disease. Instead, it helps breeders assess risk and make evidence-based decisions.
Why Is Health Testing So Important?
Many inherited conditions do not become obvious until adulthood. Without health testing, affected dogs may unknowingly pass inherited diseases to future generations.
Comprehensive screening allows breeders to:
Identify inherited health concerns.
Monitor disease throughout a dog's life.
Reduce the risk of affected puppies.
Maintain valuable genetic diversity.
Continuously improve breeding programmes over time.
Responsible breeding is built on knowledge, not chance.
Read: Health Testing Explained
Recommended Health Tests Explained
A comprehensive health testing programme includes several different assessments because no single test can identify every inherited condition.
1. Cardiac Screening
Heart disease is the most significant inherited health concern affecting Cavalier King Charles Spaniels.
Regular cardiac examinations performed by experienced veterinarians help identify:
Heart murmurs
Mitral valve disease (MMVD)
Heart rhythm abnormalities
Progression of disease over time
Many breed clubs recommend regular cardiac examinations for breeding dogs throughout their breeding lives.
2. MRI Screening
MRI is the gold standard for assessing the brain and spinal cord.
It is used to diagnose:
Chiari-like Malformation (CM)
Syringomyelia (SM)
MRI provides valuable information for both clinical diagnosis and responsible breeding decisions.
3. DNA Testing
DNA testing identifies inherited genetic variants before breeding.
Currently, commonly recommended DNA tests for Cavaliers include:
Episodic Falling Syndrome (EFS)
Curly Coat Dry Eye Syndrome (CCDE)
DNA testing allows breeders to identify dogs that are:
Clear
Carriers
Affected
This information helps breeders make informed mating decisions while preserving valuable genetic diversity.
Read: DNA Testing explained
4. Eye Examinations
Regular eye examinations performed by a veterinary ophthalmologist help identify inherited and acquired eye diseases. Although not every eye condition is inherited, routine screening supports lifelong health monitoring and responsible breeding.
Read: Eye Disorders in Cavalier King Charles Spaniels
5. Patella Examination
Luxating patella occurs when the kneecap moves out of its normal position. Breeding dogs should have their knees examined by an appropriately qualified veterinarian to identify any signs of patellar instability.
Read: Luxating patellas and Cavalier King Charles Spaniels
6. General Physical Examination
Every breeding dog should undergo regular veterinary health assessments that include evaluation of:
Overall health
Body condition
Teeth
Skin
Coat
Musculoskeletal health
Reproductive health
General health remains an important part of every breeding programme.
Understanding the Limitations of Health Testing
Health testing is extremely valuable, but it is not perfect.
Some inherited diseases:
Develop later in life.
Involve multiple genes.
Are influenced by environmental factors.
Cannot yet be predicted by available DNA tests.
Health testing should therefore be viewed as part of a comprehensive breeding strategy rather than a guarantee of perfect health.
Responsible Breeding Is More Than Health Testing
Health testing is only one part of responsible breeding.
Ethical breeders also consider:
Temperament
Breed type
Genetic diversity
Pedigree analysis
Longevity within bloodlines
Previous offspring
Overall health history
The goal is always to produce healthy, well-adjusted puppies that meet the breed standard while safeguarding long-term welfare.
Questions Puppy Buyers Should Ask
When speaking with a breeder, don't be afraid to ask questions about health testing.
Examples include:
Have both parents had recent heart examinations?
Have the parents undergone MRI screening where recommended?
Have DNA tests been completed for EFS and CCDE?
Have the parents had eye examinations?
Have patella assessments been performed?
May I see copies of the health certificates?
Can you explain your breeding decisions?
A reputable breeder will welcome these conversations and be happy to explain their health programme.
Read: Questions to ask Breeders and How to spot an unethical breeder
Why Health Certificates Matter
Responsible breeders should be able to provide documentation supporting the health testing performed on their breeding dogs.
Depending on the country and testing programme, certificates may include:
Cardiac examination reports
MRI grading certificates
DNA laboratory reports
Eye examination certificates
Patella assessment records
These documents help puppy buyers make informed decisions and demonstrate a breeder's commitment to transparency.