Cats are masters of disguise when it comes to discomfort and disease: they try hard not to let you know when they're weak, in pain or feeling sick. Nowhere does this seem more true than when you're talking about cat heart health, specifically the risk for feline heart disease.
Cats' wild ancestry makes them loath to show weakness for fear of being eaten by a predator. This instinct can make things tough for cat parents, especially for nervous newbies. You may be told to be on the lookout for evidence of illness, but do you know what to look for when it comes to your kitty's heart health?

Whether human or feline, the basics of heart health are the same: the heart is a muscle that pumps blood through the vessels of the body so it can deliver oxygen. If the heart stops pumping efficiently, the body risks becoming oxygen-depleted.
Unfortunately, heart disease and the issues associated with heart disease in cats tend to sneak up on you. Weakness, difficulty walking, and breathing difficulties can be subtle and hard to see.
Thankfully, a cat parent who's armed with some basic knowledge and a trusted veterinarian can:
- Identify the signs of feline heart disease
- Slow the onset of any signs
- Do their best to prevent the disease altogether
Types of Heart Disease in Cats
Cats get many kinds of heart disease but the most common is called cardiomyopathy, according to the Cornell Feline Health Center. This is a condition in which the left atrium of the heart muscle thickens, making it difficult for the blood to be pumped through. When this happens, fluid builds up in the lungs, a process referred to as congestive heart failure.
Hypertrophic cardiomyopathy is the most common kind of cardiomyopathy, writes Cornell. It's considered an inherited disorder and can affect cats of all ages but is typically diagnosed in older cats. Cats can also get cardiomyopathy from a nutritional deficiency in the amino acid taurine. Pets eating fish-only foods (naturally low in taurine) run the risk of damaging their hearts in this way.
Geriatric cats can also get cardiomyopathy when scar tissue builds up over time inside the heart. This occurs in about 10 percent of cardiomyopathy cases. Cornell also notes that congenital heart disorders are rare, affecting only 1 to 2 percent of kittens.
