How Long Does It Take For Maine Coons To Get Big?

Maine Coons are a majestic breed that has been captivating feline enthusiasts for centuries. Their impressive size and playful nature make them a popular choice among cat lovers worldwide. But if you’re considering adopting a Maine Coon kitten, you may be wondering how long it takes for them to reach their full size.

The answer is not as simple as you might think. A variety of factors can influence how quickly your kitten grows, including genetics, gender, diet, and exercise. In this blog post, we’ll explore the typical growth rate of Maine Coons and delve into the different factors that can impact their size.

Whether you’re a first-time cat owner or an experienced feline enthusiast, caring for your Maine Coon during their growth period is crucial to ensuring they develop into healthy and strong adults. We’ll provide tips on how to support your kitten’s growth and discuss the importance of proper nutrition and exercise.

So, let’s get started.

How Long Does it Take for a Maine Coon to Reach its Full Size?

Maine Coon cats are a sight to behold, with their striking appearance and impressive size. However, these majestic creatures take their time when it comes to reaching their full size. Depending on various factors such as genetics, gender, diet, and overall health, it can take anywhere from three to five years for a Maine Coon to grow to its full potential.

When it comes to gender, male Maine Coons tend to be larger than females and may take longer to reach their full size. Females, on the other hand, may reach their full size at around three years of age. Genetics also play a significant role in a Maine Coon’s growth rate. If the kitten’s parents were larger than average, it’s likely that the kitten will also grow to be larger.

During the first year of a Maine Coon’s life, they experience rapid growth and can double or triple in size. By year two or three, their growth rate slows down, and they start filling out and developing their muscular build. By year four, the Maine Coon should be at or very close to its full adult size.

It’s important to note that overfeeding a Maine Coon in an attempt to make them grow faster can lead to obesity and health problems down the road. A balanced diet and regular exercise are crucial for a healthy Maine Coon. It’s essential to feed them high-quality cat food specifically formulated for their breed and age.

Maintaining overall health is also critical for a Maine Coon’s growth rate. Regular visits to the vet can help ensure that your cat is healthy and receiving proper care. Any underlying health issues can slow down a Maine Coon’s growth rate and affect its overall size.

Factors that Affect the Growth Rate of Maine Coons

Maine Coons are the epitome of feline grandeur with their big size, bushy tails, and captivating eyes. Yet, have you ever wondered why some Maine Coons take longer to reach their full potential?

I have delved into the factors that affect the growth rate of Maine Coons and discovered that genetics, diet, exercise, and overall health all play important roles.


Genetics is a crucial factor in determining a Maine Coon’s size and growth rate. If your cat comes from a lineage of larger cats, they are more likely to grow bigger themselves. On the other hand, if they come from a lineage of smaller cats, their growth may be stunted. Furthermore, male Maine Coons tend to be larger than females.


Diet also plays a vital role in your Maine Coon’s growth rate. Feeding them a high-quality diet that is rich in protein and nutrients is essential for helping them develop muscle mass and reach their full potential. Conversely, feeding your cat a diet lacking in essential nutrients can stunt their growth or lead to health problems.


Exercise is another crucial factor that contributes to your Maine Coon’s growth and development. Regular exercise helps build muscle mass and keeps them healthy, which can contribute to their overall growth rate. Without enough exercise, Maine Coons may become overweight or develop health problems that can impact their growth.

Finally, overall health is critical in determining how quickly Maine Coons can reach their full size potential. Cats that are sick or have underlying health conditions may not grow as quickly as healthy cats. Thus, it’s vital to take your Maine Coon for regular check-ups with a veterinarian to ensure they are healthy and thriving.

The First Year of Growth

This is the time when they experience their most significant growth spurts, and it’s critical to ensure that they receive the right kind of nutrition and exercise to support their development.

Despite being slow growers, Maine Coons can double or even triple in size during their first four months of life. By six months old, they weigh around six to eight pounds and are considered half-grown. However, between six and twelve months, they can gain up to two pounds per month, resulting in some awkward and clumsy movements as they adjust to their new size and weight.

To ensure their growth and development during this time, it’s crucial to provide them with high-quality kitten food formulated for growth and development. This food contains all the nutrients their growing bodies need. Additionally, owners should provide plenty of opportunities for play and exercise while keeping an eye on their safety to avoid any injuries during this stage of rapid growth.

Proper nutrition and exercise during the first year are crucial for Maine Coons to reach their full potential in size and weight. Without it, they may face long-term health problems. Therefore, giving them everything they need during this time is essential.

From Year Two to Year Three

Well, the answer is that from year two to year three, your cat will experience some significant growth and development that you wouldn’t want to miss.

During their second year of life, Maine Coons undergo an incredible growth spurt where they can pack on as much as 2-3 pounds per month while also growing taller. This period is crucial to their development, and it’s essential that you provide them with high-quality food to ensure they receive all the necessary nutrients required for healthy growth.

As your Maine Coon approaches year three, they will still grow but at a slower pace. At this point, they would have reached their full height and weight potential, but they may continue to fill out and gain muscle mass.

It’s important to remember that every Maine Coon is unique and may reach their full size at a slightly different rate due to factors such as genetics, diet, and exercise. Providing ample opportunities for play and exercise is crucial to ensure your Maine Coon reaches their full potential in size and weight without facing any long-term health problems.

To prevent obesity, monitor their weight regularly, and adjust their diet accordingly. Doing so will help avoid unnecessary health complications and ensure that your furry friend remains healthy and happy.

By Year Four

By year four, your Maine Coon should have reached their maximum size, but there’s more to the story.

Maine Coons are known for their slow growth rate, taking up to three to four years to reach their full size. However, during the first year of life, they experience rapid growth, reaching about half of their adult size. By the end of their second year, they will have reached about 75% of their adult size. It’s not until the third and fourth year that they finally reach their full size.

While Maine Coons are famous for being one of the largest domesticated cat breeds, genetics and other factors can impact their size. Some individuals may be smaller in stature, even as adults. Nonetheless, it’s crucial to ensure that your Maine Coon is receiving proper nutrition and exercise to support their growth and overall health.

A balanced diet with essential nutrients is essential for healthy development. It’s important to choose high-quality food during your Maine Coon’s growth period to help them reach their full potential. Additionally, exercise and playtime are crucial for building muscle mass and maintaining a healthy weight.

Feeding Habits and Exercise for Healthy Growth

To begin, Maine Coons require a high-quality diet that is rich in protein and nutrients. A balanced diet that includes both wet and dry food is recommended to ensure they receive hydration and teeth cleaning benefits. However, it’s essential to monitor their caloric intake to prevent obesity, which can lead to health problems such as joint pain and heart disease. Since Maine Coons have a slow metabolism, overfeeding can quickly lead to weight gain.

Moreover, regular exercise is vital for Maine Coons. They are an active breed that loves playing and exploring their surroundings. Providing them with toys and scratchers can keep them entertained and prevent boredom. Additionally, it’s essential to give them opportunities for physical activity, such as playing with toys or climbing cat trees. Taking them for walks on a leash is also an excellent way to give them exercise while keeping them safe.

Furthermore, Maine Coons love water, so providing them with a shallow pool or water fountain can encourage exercise while keeping them cool and hydrated.

Also Read: How To Keep a Maine Coon Growth Chart


In conclusion, Maine Coons are truly remarkable creatures that require patience and care to reach their full size potential. It can take anywhere from three to five years for these majestic felines to grow into the impressive beasts that have captured the hearts of cat lovers worldwide. However, several factors can influence their growth rate, such as genetics, gender, diet, and exercise.

As a seasoned expert in the field, I highly recommend providing your Maine Coon with high-quality kitten food during their first year of life to support healthy growth and development. Regular exercise and playtime are also essential during this period to prevent obesity and promote overall health.

During their second year of life, Maine Coons experience significant growth spurts and require a balanced diet rich in protein and essential nutrients. It’s crucial to keep them active during this time to ensure they develop muscle mass and maintain a healthy weight.

By year four, Maine Coons should have reached their full size potential. However, it’s important to continue providing them with proper nutrition and exercise to support their overall health.

Maintaining a healthy weight through proper feeding habits and regular exercise is critical for preventing long-term health problems such as joint pain or heart disease. Therefore, it’s vital to monitor your Maine Coon’s caloric intake and provide ample opportunities for physical activity.

In summary, caring for your Maine Coon during their growth period is paramount in ensuring they develop into healthy and robust adults.