Genetic Testing and the Health of Maine Coon Bones and Eyes

There are currently about 50 recognized genetic markers in cats that can be tested through certified laboratories such as Wisdom Panel and Optimal Selection.All of my breeding cats have clear results on all available panels, and I can provide the test reports for both parents upon request.

However, it’s important to understand that👉 there are no DNA tests for hip dysplasia, other joint disorders, or entropion (inward-turning eyelids).

A genetic test is performed using a cheek swab sample (saliva or epithelial cells).Some veterinarians or online sources mistakenly refer to X-rays as “genetic testing.”In reality, X-rays only show the physical structure of the bones — they cannot reveal inherited traits or DNA information.Unfortunately, misinformation about so-called “genetic testing for hip dysplasia” has spread widely. People sometimes ask breeders for such tests — but these tests simply do not exist.

✅ Understanding Injuries and Responsibility

For the same reason, if an injury occurs after a kitten leaves the cattery, the breeder cannot be blamed for selling a “sick” cat.This misconception is often encouraged by poorly informed veterinarians or used in marketing to justify unnecessary and expensive procedures that bring profit to clinics.

In this entire system, the breeder is often the most vulnerable link — yet also the only person truly invested in your cat’s long-term health.That’s why I want to explain why Maine Coons may be more prone to joint or eye issues than smaller breeds, and what preventive steps you can take to help your kitten grow strong, healthy, and happy.

✅ Why Maine Coons May Be More Prone to Joint and Eye Issues

Maine Coons are a large and slow-maturing breed — their bodies take longer to fully develop than those of smaller cats.The bones, muscles, and ligaments finish forming around 2 to 3.5 years of age, while in most smaller breeds this process is complete by about 9 months.

During this extended growth phase, the skeletal system is still developing, yet the cat’s body weight is already significant — which makes the joints and connective tissues more sensitive to stress or injury.

Entropion (inward-turning eyelids) follows the same principle.If, during the period of facial growth, the edge of the eyelid turns slightly inward, it can later become a permanent issue.This may happen after mild inflammation or irritation, a small bump or scratch near the eye, or simply as the skull and soft tissues change shape during growth and “lock in” that position.

During your Maine Coon’s growth period, be especially attentive to their eyes and treat any signs of irritation or discharge promptly.If you notice that a small eyelash or hair has gotten into the eye, gently remove it — early care can prevent entropion from developing altogether.

✅ Supporting Healthy Bone and Eye Development

The most important support for strong bones and joints is a balanced diet rich in calcium, phosphorus, high-quality protein, and natural vitamin D, along with regular movement and access to fresh air.

Please remember: vitamin D cannot be effectively produced through glass or replaced by supplements alone — your cat needs real sunlight for proper calcium absorption and bone strength.

If safe outdoor time isn’t possible, consider using a UVB light source (for example, a reptile lamp) for about 1–2 hours a day to help stimulate the natural production of vitamin D.

✅ Breeder Responsibility and Ethical Standards

At present, there are no official rules, veterinary regulations, or professional guidelines that hold a breeder responsible for accidental injuries a kitten may experience after leaving the cattery.

No document or veterinary standard links a breeder to household injuries such as dislocations, sprains, bruises, or entropion (inward-turning eyelids).All these conditions are acquired, and they can happen to any animal due to an awkward jump, slip, collision, inflammation, or simply lack of supervision.

The only official breeding recommendation concerns selection for breeding programs:cats that have undergone entropion surgery or have had serious joint injuries should not be used for breeding.

I strictly follow these principles and confirm that in my cattery,there has never been a single breeding male or female who has had eye surgery, entropion correction, or any joint-related issues.

All my cats are healthy, active, and carefully selected,which is why I confidently stand behind the quality and sound health of every kitten I raise.