Maine Coon Health: HCM and What to Ask

By Lise Madson · September 29, 2026 · 9 min read

Maine Coons are generally sturdy

Maine Coons are a robust, natural breed that developed to survive harsh winters. Many live about 15 years. Like every breed, they also have some inherited health risks, and a good breeder helps you understand them.

The two most discussed conditions are hypertrophic cardiomyopathy, known as HCM, and hip dysplasia. Understanding them will help you ask better questions and give your cat a healthy life.

What is HCM?

HCM is a thickening of the heart's muscular wall. It is the most common heart disease in cats and can affect any breed. In Maine Coons, a known genetic variant is linked to HCM in some lines, and other causes also exist.

Signs can include fast breathing, tiredness or sudden weakness, although many cats show no signs early on. Regular checkups matter, and your vet can advise on heart screening.

What is hip dysplasia?

Hip dysplasia is a malformation of the hip joint. It can cause stiffness, reluctance to jump and pain as a cat ages. Large breeds are more prone, and weight management is important for prevention.

Keep your cat lean, provide easy-to-climb ramps or steps for older cats and ask your vet if you notice any change in movement.

What to ask a breeder about health

Ask what screening is done on the breeding cats, and ask to see results. Ask about the health of the parents and grandparents and how long they lived. Ask whether the kitten has had a vet exam.

Get the health guarantee in writing. Ask what it covers, for how long and what steps to follow if a problem is found. Every Finest Feline kitten comes with a written five-year health guarantee.

Everyday care that protects health

Feed a quality diet and keep your cat at a lean weight. Provide daily play, fresh water, a clean litter box and regular dental care. Schedule annual vet visits, and more often as your cat ages.

Keep vaccinations current and discuss parasite prevention with your vet. Watch for changes in appetite, energy, breathing or litter box habits, and call your vet if anything seems off.

Why breeder honesty matters

No breeder can promise a cat will never get sick. What a good breeder can do is choose parents carefully, be open about risks and stand behind the kitten. That honesty is a sign of a caring, experienced breeder.

Read about our approach and Lise's background, see available kittens or contact us with your health questions.

Screening and testing explained

Health screening for HCM can involve a genetic test for a known variant and heart ultrasounds, called echocardiograms, performed by a specialist. Genetic tests show whether a cat carries a known variant, while ultrasounds show whether the heart looks normal at that moment. Neither is a full guarantee, which is why breeders repeat screening over the years.

If you want to know more, ask your vet about a baseline heart check for your kitten and follow-ups as it grows.

Signs that need a vet visit

Call your vet quickly if your cat breathes fast at rest, breathes with an open mouth, seems suddenly weak, loses appetite, hides more than usual or has sudden hind-leg problems. Many heart problems are silent at first, so routine exams matter.

Keep a simple record of your cat's resting breathing rate. Count breaths for a full minute while your cat is asleep. A steady rate under about thirty breaths a minute is normal, and a rising trend is worth reporting to your vet.

Questions about joints and mobility

Ask the breeder about hip health in the parents and their age. Keep your kitten lean, avoid very high jumps in its early months and provide steps or ramps as it ages. Regular play on soft surfaces builds muscle that protects joints.

Weight, exercise and lifelong habits

Keeping a Maine Coon lean is one of the best gifts you can give. Extra weight puts strain on the heart, hips and joints. Use measured meals, play daily and avoid too many treats. Puzzle feeders slow eating and add mental exercise.

Encourage movement with cat trees, wand toys and short chase games. Cats love routine, so choose regular times for play. Watch how your cat jumps and climbs. Any change in how easily it moves is worth a note to your vet.

As your cat ages, adapt the home with steps to favorite spots, a low-sided litter box and soft bedding. Small changes keep an older cat comfortable and confident.

Keep good records

Keep a folder with your kitten's health records, vaccination dates, weights and any test results. Bring it to each vet visit. Good records make it easier for your vet to spot trends and give advice tailored to your cat. If you ever need to make a claim under the breeder's guarantee, clear records also make that process smoother.

Your role as an owner

Once your kitten comes home, your care is the biggest factor in its long-term health. Keep regular vet visits, follow the vaccine schedule, feed measured meals and keep play and exercise a daily habit. Early attention to small changes often makes a big difference, so never hesitate to call your vet or your breeder.