CatSee a vet within 24 hours
Hypertrophic cardiomyopathy (HCM)
The most common feline heart disease; Ragdolls and Maines are prone — the only early clue is a faster sleeping breath rate.
🔍 Related symptoms
Typical symptoms ranked by diagnostic value — tap for the full symptom page
✅ Home-care checklist
- ✓Learn to count sleeping breaths (over 40/min is a warning)
- ✓Book an echocardiogram
- ✓Avoid stress and vigorous play
🏥 When to see a vet
- ⚠Persistently fast resting breathing
- ⚠Open-mouth breathing or blue gums = emergency now
🐾 Predisposed breeds
Not sure how serious it is? Assess it with the symptom checker
Start symptom check →