The average lifespan of a Maine Coon is 12 to 15 years. To ensure a Maine Coon reaches its maximum life expectancy, owners should focus on regular cardiac screenings for Hypertrophic Cardiomyopathy (HCM), maintaining a lean body weight to prevent hip dysplasia, and providing a high-protein diet. Because they are a large-framed breed, joint support and early genetic testing are key to their long-term health
In 2026, the average lifespan of a Maine Coon is 12 to 15 years. While their large size often leads people to compare them to large-breed dogs (who have shorter lives), Maine Coons maintain a standard feline life expectancy. With optimal indoor care and genetic screening, many reach their late teens.
HCM is the most common heart disease in cats and is particularly prevalent in Maine Coons. It causes the walls of the heart to thicken, eventually leading to heart failure.
Surprisingly, Maine Coons are one of the few cat breeds significantly affected by hip dysplasia due to their sheer size and weight.
SMA is a genetic disorder that affects the motor neurons in the lower spinal cord. While not usually fatal, it can affect mobility and require specialized home care to ensure a long life.
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