CARDIOMYOPATHY IN CATS
This page is part of our Bengal Health & Care series.
Cardiomyopathy is one of the most important health conditions for cat owners to be aware of — especially for breeds like Bengals, Maine Coons, and Ragdolls, which can have a genetic predisposition. While the topic can feel intimidating, understanding the basics empowers families to make informed decisions and support their cat’s long‑term well‑being.
This page offers a gentle, professional overview of cardiomyopathy in cats: what it is, why it matters, and how responsible breeders help reduce the risk.
❤️ What Is Cardiomyopathy?
Cardiomyopathy refers to diseases of the heart muscle. In cats, the most common form is Hypertrophic Cardiomyopathy (HCM) — a condition where the heart muscle becomes abnormally thick. This thickening can make it harder for the heart to pump blood effectively.
HCM can vary widely in severity. Some cats live long, full lives with mild changes, while others may develop more serious complications.
🐾 Types of Cardiomyopathy in Cats
While HCM is the most common, there are several forms:
Hypertrophic Cardiomyopathy (HCM)
The heart muscle becomes thickened, reducing efficiency.
Dilated Cardiomyopathy (DCM)
The heart becomes enlarged and weak. This form is now rare due to improved feline nutrition.
Restrictive Cardiomyopathy (RCM)
The heart becomes stiff, limiting its ability to fill properly.
Each type affects the heart differently, but all involve changes to the heart muscle that can impact function.
🌿 What Causes Cardiomyopathy?
Cardiomyopathy can be influenced by:
• Genetics (especially in certain breeds)
• Age
• Underlying health conditions
• Nutritional factors (rare today)
In Bengals, HCM is the primary concern, which is why responsible breeders prioritize screening.
🧬 Genetic Screening & Responsible Breeding
Ethical breeders take cardiomyopathy seriously. While there is no DNA test for HCM in Bengals, responsible programs use regular cardiac ultrasounds (echocardiograms) performed by board‑certified veterinary cardiologists.
These screenings help:
• Identify early heart changes
• Reduce the risk of passing on affected genes
• Support long‑term breed health
• Provide peace of mind to families
All of our breeding cats undergo routine HCM screening to help ensure the healthiest possible kittens.
🐱 Signs That May Indicate a Heart Concern
Cats are experts at hiding discomfort, so symptoms may be subtle. Families should be aware of general signs that warrant veterinary attention, such as:
• Changes in breathing
• Decreased activity
• Difficulty exercising
• Sudden hind‑leg weakness
• Fainting or collapse
These signs can be associated with many conditions, not just heart disease, so a veterinarian is the best resource for evaluation.
🩺 How Veterinarians Diagnose Cardiomyopathy
If a veterinarian suspects a heart condition, they may recommend:
• A physical exam BY A BOARD CERTIFIED CARDIOLOGIST
• Chest X‑rays
• Echocardiogram (heart ultrasound)
• Blood pressure evaluation
• Blood tests that assess cardiac markers
These tools help determine whether heart changes are present and how significant they may be.
🌙 Living With a Cat Who Has Cardiomyopathy
Many cats with cardiomyopathy live comfortably with monitoring and veterinary guidance. Treatment plans vary depending on the individual cat and may include lifestyle adjustments or medications recommended by a veterinarian.
The most important thing is early awareness and regular veterinary care.
💛 Our Commitment to Heart Health
We take cardiomyopathy seriously and are committed to:
• Routine HCM screening for all breeding cats
• Transparent communication with families
• Supporting long‑term breed health
• Educating owners with compassion and clarity
While no breeder can guarantee that a cat will never develop HCM, responsible screening significantly reduces the risk and supports healthier generations.
HEART MURMURS:
These can be a precursor to HCM but not always.
A heart murmur is an abnormal sound that your vet can hear through the stethoscope. The sound is caused by an abnormal flow of blood within the heart. Not all heart murmurs are serious, but because your vet cannot tell just by listening, it is important to have some diagnostics performed.
Unfortunately, a benign or innocent heart murmur can sound like a heart murmur caused by severe heart disease in a cat. So all heart murmurs will need to be evaluated thoroughly by a board certified cardiologist to ensure the health of your cat.
While hypertrophic cardiomyopathy in Bengal cats is one of the reasons for a heart murmur, there are others.
Congenital heart abnormalities
Acquired heart disease
Secondary Heart Murmurs
🐾 A Note From Our Family
We believe that knowledge empowers families to provide the best possible care. Cardiomyopathy can sound overwhelming, but with responsible breeding, regular veterinary care, and loving attention, many cats live long, happy lives.
If you ever have questions about heart health, screening, or our breeding practices, we’re always here to help.
HCM Testing
One of the benefits of purchasing a pedigree pet is a known health history. Hypertrophic cardiomyopathy (HCM) affects one in seven domestic cats. Pedigree cat breeders can reduce these odds IF they do their part.
What should pedigree breeders be doing to reduce the risk of HCM and other heart diseases?
They should be testing their breeding cats with an echocardiogram performed by a Board Certified Cardiologist every 12 to 18 months until the breeding cat is over the age of five years old, preferably until the cat is eight years old or older.
While the first test on a breeding cat is done at around one-year-old, heart testing needs to be repeated. Many forms of heart disease, including HCM, are progressive. Cats may not exhibit the first signs of it until they are 4-6 years old, occasionally even later.
Cardiomyopathy in Cats
We do all we can to be sure you have a healthy happy lifelong companion, including testing the parents for HCM.
Hypertrophic Cardiomyopathy is a condition of the heart in which the muscular walls of the heart are thickened. It is a disease that can affect any cat, dog, or even people. However, Bengal Cats are particularly predisposed to this condition. This disease must be diagnosed from a board certified cardiologist (not just a Vet).
This article will cover signs and symptoms, diagnosis, treatment, and prognosis. Click Read More next to this topic.