when do cats stop growing

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Watching a tiny kitten turn into a large cat is truly a delight. But, figuring out when this growth stops can be tricky. Many things, like the cat’s breed, gender, what it eats, and its genes, determine this. In this guide, we will dive into the stages of a cat’s development and what affects how much a cat weighs. You’ll learn how to follow your cat’s journey from being a kitten to an adult.

Typically, most house cats stop growing in size around 12-18 months of age. But, some like the Maine Coon, a big breed, might keep growing until they are 3-4. It’s important to grasp these special growth elements for cats and differences in cat sizes by breed. By watching your cat’s weight, measuring how tall they are, and getting regular check-ups, you can help them grow well and stay healthy.

Key Takeaways

  • Most domestic cats reach their full size between 12-18 months of age.
  • Larger cat breeds like Maine Coons may continue growing until 3-4 years old.
  • Tracking weight gain, height, and consulting a vet helps monitor proper development.
  • Factors like breed, gender, diet, and genetics influence a cat’s growth rate.
  • Regular checkups ensure your cat meets crucial developmental milestones.


Kittens grow from cute, fluffy balls of fur into playful cats. This journey from kitten to adult cat is exciting, filled with cat growth factors and feline development influences. Understanding these factors lets cat owners offer the best care during their pet’s vital growing period.

The Cute Fluff Ball Phase

In the first weeks, kittens are cute fluffy kittens. They grow fast, relying on their mother’s milk. Soon, their playful side shines through, and they start growing quickly.

Factors Influencing Cat Growth

All kittens begin small, but their size and how fast they grow vary. Several cat growth factors and feline development influences play a big role. These include:

  • Breed: Each cat breed grows in a different way and reaches a unique size.
  • Gender: Usually, male cats are bigger than female cats.
  • Nutrition: Eating a diet full of needed nutrients helps in growing well.
  • Genetics: Some inheritable traits, such as dwarfism, can influence size.

Knowing these cat growth factors and feline development influences helps owners. With this knowledge, they can predict their cat’s growth and offer the right care as they move from kittens to adult cats.

Cat Growth Stages

Cats grow in stages from birth to their senior years. It’s important to know these stages to care for them properly. They start as tiny, helpless newborn kittens who rely totally on their mother.

Newborn to Six Months

Kittens grow quickly in the first six months. They gain a lot of weight, sometimes 0.25 – 0.5 lbs. per week. They start eating solid food, and their senses, mobility, and coordination get better.

kitten growth stages

Six to Twelve Months

From six to twelve months, kittens slow down but keep growing. By ten to twelve months, it’s time to change their food to adult cat food. They need the right diet and lots of play at this point.

One to Three Years

Most cats reach full size by 18 months. But, bigger types like Maine Coons might grow until 2-3 years. They become adults during this time. Regular vet check-ups are important to make sure they’re growing well.

Three Years and Beyond

After three years, cats are fully mature. Their growth stops, but they still need a good diet and plenty of play. It’s also very important to watch for health problems linked to getting older.

Breed Age at Full Growth Average Adult Size
Domestic Shorthair, Tabby, Siamese 12 – 19 months 13-16 inches long, 11 inches tall, 10-22 lbs
Ragdoll 4 years 15-26 inches long, 9-11 inches tall, 8-20 lbs
Savannah 2 years 20-25 inches long, 10-19 inches tall, 12-20 lbs
Maine Coon 4 years 48 inches long, 8-16 inches tall, 25 lbs
Bengal 2 years 13-16 inches long, 11-13 inches tall, 10-22 lbs

The table shows how growth times and adult sizes vary by breed. Males are usually bigger than females by up to 2 lbs. Breeding, food, and litter size can also affect size.

When Do Cats Stop Growing?

The cat growth timeline changes between breeds. But most cats are their full size at 12-18 months. This feline maturity age marks the end of kittenhood for many. Yet, bigger cats might keep growing for a few more years.

For cat parents, knowing when their cat won’t get any bigger is key. It helps with care and watching their growth. Visiting the vet regularly is wise. It lets you keep an eye on your kitty’s kitten development schedule and check their weight.

Tabby cats, Siamese cats, and Domestic Shorthair cats typically stop growing at 12 – 19 months with an average adult size of 13-16 inches long, 11 inches tall, and 10-22 lbs.

Most cats, like Tabbies and Siamese, finish growing in their first 1.5 years. But, some big breeds take longer. They might not reach their full size for three to four years.

  • Ragdoll cats typically stop growing at four years old with an average adult size of 15-26 inches long, 9-11 inches tall, and 8-20 lbs.
  • Savannah cats typically stop growing at two years old with an average adult size of 20-25 inches long, 10-19 inches tall, and 12-20 lbs.
  • Maine Coon cats, known for their impressive size, typically stop growing at four years old with an average adult size of 48 inches long, 8-16 inches tall, and 25 lbs.
  • Bengal cats typically stop growing at two years old with an average adult size of 13-16 inches long, 11-13 inches tall, and 10-22 lbs.

Breed-Specific Growth Timelines

There are over 70 recognized cat breeds worldwide. So, how fast they grow can vary a lot. Some cats will be full size within their first year. But others may not stop growing for several years. Knowing this helps you know what to expect as your pet grows.

Domestic Shorthair and Tabby Cats

Domestic shorthair and tabby cats are known for their friendly nature. They usually finish growing between 12 to 16 months. Adult sizes for these common cats vary, but they usually weigh between 8 and 12 pounds. Males tend to be a bit bigger than females.

Siamese Cats

The Siamese breed stands out with its unique look and slim frame. They usually reach full size between 12 to 19 months. Adult Siamese cats weigh around 6 to 10 pounds and stand at 8 to 10 inches tall.

Siamese cat growth patterns

Ragdoll Cats

Ragdoll cats are known for their calm nature and soft, semi-long hair. They are a bigger breed and may keep growing until they’re 4 years old. As adults, Ragdolls can be 17 to 22 inches long and weigh 10 to 20 pounds.

Maine Coon Cats

Maine Coons are from the United States and are very large. These gentle giants keep growing until they are 4 years old. A grown male Maine Coon can weigh as much as 25 pounds and be 25 inches long.

Bengal Cats

Bengals look like wild cats, the Asian Leopard Cat, with their muscular build and unique coat patterns. They usually stop growing by 2 years of age. Adult Bengals can weigh from 10 to 22 pounds and be 13 to 18 inches long.

Factors Affecting Cat Growth Rate

A cat’s journey from kitten to adult can be shaped by many factors. These influence how quickly they grow and how big they get. It’s important to know these factors to give your pet the best care as they grow.


In the male vs female cat size battle, males often come out bigger. This difference can be seen within the same breed. Males tend to weigh more and grow longer or taller than females.


Spaying or neutering pets is responsible, but when done can matter. Doing it too early might slow the cat’s growth a bit. Yet, if you wait until they’re mature, little changes are expected. Your vet can suggest the best timing for this.

Birth Order and Litter Size

In a litter, the birth order and how many siblings a kitten has can be key. First-borns and those in smaller litters often get more of their mother’s care. This can lead to them growing bigger than others from the same litter.

Diet and Nutrition

A good diet is essential for a kitten’s early years of growth. They need foods high in quality protein, fats, and essential nutrients. Kitten-specific food is recommended during their first year to meet their extra nutrition needs.

Genetics and Health Conditions

A cat’s genes play a big role in their size and growth. Some breeds are naturally bigger or smaller. Genetic issues like dwarfism and health problems can also be factors. Regular visits to the vet can spot any problems that might slow growth.

Breed Average Adult Size Age of Full Growth
Domestic Shorthair/Tabby 13-16 inches long, 11 inches tall, 10-22 lbs 12-19 months
Ragdoll 15-26 inches long, 9-11 inches tall, 8-20 lbs 4 years
Savannah 20-25 inches long, 10-19 inches tall, 12-20 lbs 2 years
Maine Coon 48 inches long, 8-16 inches tall, 25 lbs 4 years
Bengal 13-16 inches long, 11-13 inches tall, 10-22 lbs 2 years

Tracking Your Cat’s Growth

Watching your small kitten turn into a big, elegant cat is both amazing and important. Regularly checking your cat’s weight, measuring how tall and long they are, and going to the vet with them often helps you keep an eye on their progress and health. This is crucial for their well-being.

Weight Monitoring

It’s vital to keep watch on how your kitten’s weight changes every week. Make a habit of weighing them. By doing this regularly, you can make sure they’re growing the right way for their age and kind.

Cat weight tracking chart

Height and Length Measurements

But it’s not just about weight. Measuring how tall and long your kitten is also gives us a clear look at their development. Measure their height and length every so often. This, along with their weight, tells us a lot about how they’re growing.

Veterinary Check-ups

It’s great to keep an eye on them at home. But, remember to visit the vet regularly too. Vets make sure your kitten’s growth fits their age and type. They check their health and development and give advice on any needed care changes.

Every cat grows at its own speed. Their growth might be different from what’s expected of their breed. By keeping a close watch on their growth and talking to your vet, you can make sure they’re well cared for as they grow.

Common Misconceptions about Cat Growth

It’s important to know what’s true and what’s not as your cat grows up. There are myths about kitten paw size and the effect of spaying and neutering.

Paw Size Myth

Some people think a kitten’s paw size shows how big they’ll be as an adult. But, vets say this idea is not correct. Kitten paw size does not tell you how big they will grow. Different cat breeds and even cats within the same breed can grow at various rates.

Effects of Spaying/Neutering

There’s a misconception that fixing a cat too early will stop their growth. However, vets recommend doing it by 4-6 months. This won’t stop their growth. In some cases, cats might even grow bigger.

spaying or neutering before adulthood

Growth Factor Male Cats Female Cats
Average Weight 7 pounds 6 pounds
Average Length 21 inches 19 inches

To care for your cat correctly, know the right facts. Ask your vet about your cat’s growth and any worries you have.

How Big Will My Cat Get?

Guessing an adult cat’s size is hard due to many factors. Things like breed, gender, and genes matter a lot. But knowing the average size for the breed can help you get an idea of your cat’s size.

Take domestic shorthairs and tabby cats, for example. They usually reach about 13-16 inches long as adults. They’re about 11 inches tall and weigh from 10 to 22 lbs. But the huge Maine Coon cat can be as long as 48 inches and weigh about 25 lbs.

Breed Length Height Weight
Domestic Shorthair/Tabby 13-16 inches 11 inches 10-22 lbs
Ragdoll 15-26 inches 9-11 inches 8-20 lbs
Savannah 20-25 inches 10-19 inches 12-20 lbs
Maine Coon 48 inches 8-16 inches 25 lbs
Bengal 13-16 inches 11-13 inches 10-22 lbs

In looking at size averages by breed, we should also think about male and female cat weights. Usually, male cats are bigger than females. They could weigh up to 2 lbs more in the same breed.

Maintaining a Healthy Weight

When your kitten grows into an adult cat, it’s important to keep them at a healthy weight. This ensures they’re in good health. A mix of healthy meals and play prevents them from getting too fat.

Transitioning to Adult Cat Food

At about 12 months, your cat should start eating adult cat food instead of kitten food. Talk to your vet about the best options. They can recommend the right food and how much your cat should eat based on their size and how much they move.

Adult food gives your cat all the good stuff they need to stay healthy. It also helps them use the energy they get from their food.

Exercise and Activity Levels

Cats love to play, especially when they’re young. But they might slow down as they get older. Setting up playtime every day helps keep them active and healthy.

Use toys, cat trees, or even let them explore outside with your watching. This makes sure they get enough exercise and keeps their mind sharp, too.

Preventing Obesity

Did you know, more than half of all cats are either overweight or obese, says the American Veterinary Medical Association? To stop this from happening to your cat, follow these steps:

  • Stick to a regular feeding schedule and watch how much they eat.
  • Don’t give too many treats and don’t leave food out all day.
  • Play with your cat often to keep them moving.
  • Keep an eye on their weight and how healthy they look. Adjust their food and playtimes as they need.

Most healthy cats weigh between 8 and 12 pounds. But, this can be different depending on the cat’s breed. A special chart shows how to tell if your cat is the right shape.

Working with a vet on your cat’s weight is key. Kitten’s weights can change a lot as they grow. Older cats might put on weight because they move less and their bodies change.

Looking after what your cat eats, how much they play, and their weight is a great way to help them live a long, joyful life with you.

Caring for Senior and Geriatric Cats

Cats’ needs change as they get older. It’s important to adjust their care. Today, thanks to better diets and vet care, they can live longer lives. Cats are now living into their twenties.

Nutritional Needs

At 12 to 14 years, cats become seniors. They need different food then. Try a diet made for senior cats. It has better proteins and extras.

Mixing wet and dry food helps them drink more water. This is good for their kidneys.

Health Monitoring

For older cats, more vet visits are necessary. Every six months is a good start. Make sure your vet does detailed check-ups.

They should run blood tests and do X-rays. These tests check for things like arthritis and kidney issues. Finding problems early can really help your cat.

Accommodating Mobility Changes

Older cats might find it hard to move around. Make sure their food, water, and litter are easy to reach. You can do this by adding ramps. Nightlights also help cats see in the dark.

If grooming is tough for them, you may need to help. Keeping their routine the same can make them feel less stressed.


Watching a kitten cat growth journey into an adult cat is so fulfilling. Knowing all about their growth phases, breed traits, and what affects their development helps a lot. It lets you keep track of their progress and take care of them properly.

It’s important to feed them right, based on their age and breed. Regular vet visits are a must. Making sure they have what they need as they grow, like changing where their litter box is or getting new toys, helps them live their best life.

It takes time, effort, and a loving atmosphere, but your kitten will grow into a confident and strong cat. Keep an eye on their changes, handle any worries quickly, and always show them love. This way, you build a strong connection that will last forever, ensuring your cat is happy and healthy at every step.


When do cats stop growing?

Most house cats reach their full size between 12-18 months old. Yet, bigger breeds like Maine Coons keep growing until they are 3-4 years old.

How can I tell if my cat has reached its full size?

Look closely at your cat’s growth by weighing them often, measuring their height and length, and having regular vet check-ups. Vets can tell if your cat is growing right for their age and breed.

Do different cat breeds have varying growth rates?

Yes, cat breeds differ in how fast they grow and how big they get. Small cats like Siamese reach their full size at about 12 months. Yet, large cats, like Maine Coons, might keep growing up to 4 years.

What factors influence a cat’s growth rate?

Much affects how fast a cat grows, such as the breed, gender, and if they’re spayed or neutered. Things like diet, genetics, and health conditions also play a big part.

Can spaying/neutering stunt a cat’s growth?

Getting your cat fixed usually doesn’t stop them from growing, especially when it’s done at the right time.

How can I estimate my cat’s adult size?

It’s hard to say exactly how big your cat will get. But knowing about their breed can help. For instance, domestic shorthairs usually weigh between 10-22 lbs, while the biggest, Maine Coons, can be 25 lbs.

What should I do once my cat reaches adulthood?

After about 12 months, switch your cat to adult food. Your vet can tell you the best type. Make sure they get lots of exercise to keep them healthy and not overweight.

How do a cat’s nutritional needs change as they age?

When cats become older, around 10-12 years, they need different food. Feed them a diet made for seniors to keep them healthy. Also, have more check-ups so the vet can look for health problems.

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