Health information without false promises
What is HCM?
Hypertrophic cardiomyopathy describes abnormal thickening of the heart muscle. It can occur in cats, including Ragdolls. Some Ragdolls carry a known breed-associated genetic variant, but heart disease can also have causes not detected by that specific test.
Ask for details, not slogans
A statement such as “HCM clear” is not enough to evaluate a breeding program. Ask which cats were tested, what exact test was used, how results are documented, and whether a veterinarian has recommended any additional cardiac assessment. Remember that a genetic test is not a lifetime guarantee of heart health.
Work with a veterinarian
Only your veterinarian can interpret a cat’s clinical findings and recommend examination or screening. This guide is general education, not a diagnosis or medical recommendation.
Ask direct questions, verify breeder claims independently, and speak with a qualified veterinarian about any medical questions. This resource is educational and does not endorse any individual breeder.