When do Maine Coon Cats Stop Growing?

When do Maine Coon Cats Stop Growing

By Jennie @ Maine Coon Cats World

March 21, 2023

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One of the most frequently asked questions regarding Maine Coon cats is when they stop growing. Maine Coon cats, known for their large size and majestic appearance, have a longer growth period compared to other domestic cat breeds. Understanding the growth timeline of these gentle giants will help owners cater to their nutritional and developmental needs.

The growth of Maine Coon cats can be attributed to a combination of genetics, diet, and overall health. Generally, Maine Coon cats reach their full size by the age of 3 to 5 years. However, some may continue to grow slightly until they are 7 years old.

It is essential to monitor and support their growth by providing a balanced diet, regular exercise and keeping a close eye on their health. This will ensure that your Maine Coon cat develops well and thrives throughout its life.


Characteristics of Maine Coon Cats

Maine Coon cats are known for their impressive size and friendly personalities. Common characteristics of the breed include:

  • Large size: Males can weigh between 13-18 pounds, while females typically range from 8-12 pounds.
  • Long, bushy tail: Their tails can be as long as their bodies and are used to keep them warm in colder climates.
  • Thick double-layer coat: This helps to protect them from harsh weather conditions.
  • Tufted ears: They have prominent tufts of fur on their ears, which can help to keep out cold, wind, and debris.

While their size is a notable characteristic, it’s also important to discuss their personalities. Maine Coons are known to be affectionate, gentle, and sociable cats that enjoy human company. They are often described as having a “dog-like” personality because of their loyal nature and tendency to follow their owners around the house.

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When it comes to growth, Maine Coons experience a slower rate of development compared to other breeds. This means they may take longer to reach their full size, often continuing to grow until they are around three to five years old.

When Do Maine Coon Cats Stop Growing?

Growth Timeline of Maine Coon Cats

Maine Coon cats are known for their large size and lengthy growth period. The growth timeline for these cats can be divided into several stages. Understanding these stages can help Maine Coon owners anticipate their cat’s development and potential size.

Birth to 3 months: During this period, Maine Coon kittens are rapidly growing as they begin to explore their surroundings. They typically gain around 1 ounce per day during the first 3 months.

3 months to 1 year: In this phase, the growth rate starts to slow down. Maine Coon cats will grow consistently but at a lesser pace compared to their initial months. They may gain approximately 1 to 1.5 pounds per month.

1-2 years: By the time a Maine Coon reaches around 1 year old, the growth curve tends to flatten out. Although they still grow during this period, it is at a much slower rate. Their weight gain per month may vary between 0.5 to 1 pound.

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2-3 years: At this stage, Maine Coon cats are entering their final growth phase. They may continue to gain some weight, but their size will not change dramatically. Most Maine Coons will be close to their full-grown size by the end of their third year.

It is important to note that genetics play a significant role in the growth and development of a Maine Coon cat, and individual variation can occur. A balanced and age-appropriate diet, as well as regular veterinary checkups, contribute to ensuring optimal growth.

When Do Maine Coon Cats Stop Growing?

Factors Affecting Growth

Several factors influence the growth of Maine Coon Cats, and these factors play a crucial role in determining their final size.

1. Genetics: The genetics of a Maine Coon cat can significantly affect its growth potential. Cats with larger parents are more likely to be bigger, while those with smaller parents may not grow as large.

2. Nutrition: A well-balanced diet is essential for the proper growth and development of Maine Coon cats. High-quality cat food enriched with essential nutrients is necessary to support their growing bodies. Overfeeding or underfeeding can lead to health issues and may impact their overall size.

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3. Health: Regular check-ups and vaccinations are essential to keep Maine Coon cats healthy. Illness or health complications during their critical growth period can have a lasting effect on their size and overall development.

4. Exercise: Physical activity is vital for the healthy growth of Maine Coon cats. Regular exercise helps improve muscle tone and maintain optimum weight, contributing to their development.

5. Neutering or Spaying: Studies have shown that neutering or spaying can influence a cat’s growth. In some cases, spayed or neutered Maine Coon cats may grow slightly larger than their counterparts who have not undergone the procedure.

How to Support Healthy Growth

Maine Coon cats require proper care and nutrition to support their healthy growth. This care includes feeding them with high-quality food, ensuring they get enough exercise, and providing a stress-free environment. In this section, we will discuss some essential tips for supporting your Maine Coon’s growth.

Nutrition: Providing a balanced diet is critical for the overall health and growth of your Maine Coon. Choose a high-quality cat food that is specifically formulated for large breeds, and make sure it contains essential nutrients such as protein, fats, vitamins, and minerals. Avoid overfeeding or free-feeding, as this can lead to obesity and health issues. Instead, portion meals and feed your cat multiple times a day.

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Exercise: Apart from a proper diet, regular exercise is essential for maintaining a healthy weight and promoting growth. Provide your Maine Coon with various toys and engage in interactive play to keep them physically and mentally stimulated. Climbing trees or scratching posts can help accommodate their instinctual needs and support their muscular development.

Regular Vet Checkups: Regular visits to the veterinarian are crucial to monitor your Maine Coon’s growth and overall health. These checkups can help detect any underlying health issues and ensure your cat receives necessary vaccinations and treatments.

Stress-free Environment: Provide a comfortable and safe environment for your Maine Coon to grow and thrive. Reduce stressors such as excessive noise or crowded living spaces, and offer them a cozy, quiet space to rest and relax. A positive environment contributes to their overall well-being and supports a healthy growth rate.

When Do Maine Coon Cats Stop Growing?


Maine Coon cats, known for their large stature and friendly nature, typically have a longer growth period compared to other breeds. While most domestic cats reach their full size around 12 to 18 months, Maine Coon cats can take up to 3 to 5 years to stop growing.

Each individual cat may differ slightly in terms of growth rate and final size. Factors influencing this include genetics, nutrition, and overall health. It is essential for Maine Coon owners to provide them with a well-balanced diet and routine vet check-ups to ensure proper growth and development.

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In conclusion, Maine Coon cats have a longer growth phase than other breeds, but with proper care and attention, they can grow into healthy and impressive companions.

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Written by Jennie @ Maine Coon Cats World

I'm Jennie, the creator of Maine Coon Cats World and Ragdoll Cats World. I have been owned and loved by Ragdoll Cats for almost twenty years and have recently introduced a Maine Coon Cat into our family, Eddie, who we think it the best cat in the world but shhhhh ... don't tell our Ragdolls that! We love sharing our knowledge of all things related to Maine Coon Cats with you at Maine Coon Cats World!

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