Hypertrophic cardiomyopathy (HCM) is the most common heart disease diagnosed in cats. Maine Coon, Ragdoll & Persian breeds are prone to this. Symptoms include rapid, open-mouthed breathing, lethargy and sudden hind limb paralysis. Some cats show no symptoms. A minor heart murmur can lead to congestive heart failure. A proactive approach with natural supplements can help. Ask Ariel's Purrfect Pet CoQ10, Amazing Omegas and Power Probiotic can strengthen the heart muscle & give your cat more energy!