Heart muscle disease (HCM)
The heart muscle grows too thick, so the heart pumps less well. Many cats show nothing for a long time. It can happen in any cat; how often in RagaMuffins is not known. Because the breed comes from the Ragdoll, breeders test for the inherited form known in Ragdolls.
How it is found: A DNA test for the Ragdoll form and a heart scan by a specialist. A clear DNA result does not rule HCM out completely.






