Home Cats When Do Cats Stop Growing And Reach Their Full Maturity?

When Do Cats Stop Growing And Reach Their Full Maturity?

by Petalove

Note: This site contains affiliate links. You can see the full disclosure by clicking here.

One of our most popular questions is “When do cats stop growing?” In a matter of time, a kitten can shoot to near-adult size, it might seem like it was just yesterday when you could put your beloved kitten in your palm. To understand when can kittens stop growing, and when kittens reach their full maturity, it is important to know about a cat’s developmental stages.
How big a cat gets varies on what breed they are, how much care they get, their climate, and the such. Speaking of diet, this aspect must be considered when speaking of cats reaching their full size. So, let’s explore when a cat hits its maximum growth.

Cat Growth Chart

Here’s a very simplified and visual cat growth chart to help you determine when your cat will stop growing:
When Do Cats Stop Growing? Cat Growth Chart

The 5 Cat Growth Stages

0-2 months: It is the most critical stage of the kitten ‘s life and therefore should be experienced with the mom cat.
2-3 months: This is really the phase when most kittens are taken and divided from their mom. This marks their shift from liquid to solid food. This maybe your cat’s most emotional period, and it’s recommended that you pay much attention. They typically hit 2-4 pounds in this phase.
3-6 months: It is indeed the cat’s “adolescent” stage of puberty. This same cat may experience confusion or be more aggressive, but it’s part of life. But many vets recommend neutering the cat around the 6-month threshold or earlier.
6-12 months: One would call this the adolescent / young adult. The cat usually reaches its full size during this time. It depends on cat type, but cat should weigh 8-15 pounds.
1-2 years: At 18 months, most cats hit their maximum size, when most kittens stop developing. Some cats may still grow after this stage but at a much slower speed. On average, at 16 weeks old, a cat’s maximum adult weight will be twice the cat’s weight.

A kitten is normally regarded as an adult cat whenever it reaches 1 year of age, but at this point, your cat may not be fully grown. Kittens usually attain a length and weight near their full-grown size by age 9-12.
Just after the 1-year mark, most cats tend to develop much slower up to nearly 18 months of age. Larger breeds, like Maine coon cats, usually take longer to grow to full size. Such cats may not be fully developed until they reach 2-4 years.

Recommended Reading:

How Long Do Cats Live?

When it comes to “How long do cats live?” “All our work strongly shows that indoor cats live about three times as long as stray cats. How long are cats living indoor cats? Cats that live indoors are usually vaccinated, sterilized and protected from external stresses, risks and hazards.  They are fed regularly with easy access to fresh, clean water.

They need more time, more opportunities, and must be motivated to get enough exercise to prevent obesity. Luckily, diligent pet owners have all that. -The number of sites we visited varied widely from 14-20 years. Based on numbers chronicled, an indoor cat’s average lifespan is 16,875 years.

When Do Tabby Cats Stop Growing?


A cat’s diet, exercise, and genetic predispositions play a significant role in its overall lifespan and health. Hair colour and markings like tabby stripes do not influence how long a cat lives. If your tabby cat remains healthy and resides indoors, you should hope to experience her company for 12-18 years, perhaps longer.

When Do Domestic Shorthair Cats Stop Growing?

Domestic Shorthair Gothic

The American Shorthair is not normally considered fully developed and grown until it reaches the true strong athletic ratio of its breed 3-4 years old. Men are generally larger than females, and men have definite jowls.

When Do Siamese Cats Stop Growing?

Newton & Tequila

Siamese cats look one of the most unique, and so most people will recognize them instantly. A Siamese is not considered completely grown until two years of age, and their colouring continues to evolve during their lives.

When Do Bengal Cats Stop Growing?

When do cats stop growing: Bengal Cats

Bengal Cats generally stop growing at about one to two years of age, and then you can think your cat’s finished growing when it’s two years old. Bengal Cats often tend to also be slow growers as they evolve into a medium-sized cat.

Why Is My Cat So Small?

There are some good reasons for the small size of a cat, and one is breed.
Much like the Maine Coons that are widely known, some breeds are known to be small.

Cats, like humans, vary in size. A naturally small cat can be safe. Sometimes they were runts, a litter ‘s smallest cat that didn’t compete well for food, so it didn’t grow much or but sometimes it’s natural lottery luck, so they’re small for the same purpose people are tiny. The Cat Breeds Encyclopedia describes a small breed as one where adults typically measure less than ten pounds.

Is The Size Of A Cat Affected By Gender?

Sexual maturation in cats, basically feline puberty, takes a couple of months from start to finish. The process usually begins at the age of 6 and 9 months. Although pregnancy is feasible once your female kitten physically matures, it can be tough on her growing body.

Male kittens who have reached this age can keep their own father kittens away from the female cats or kittens to try to prevent this possibility. If you intend to spay or neuter your cat, discuss with your vet about when to do the procedure. Many vets recommend spaying or neutral kittens before full sexual maturity. Neutering your male cats before the age of 6 months may prevent spraying behaviour.

Recommended Wet Cat Food For Your Growing Kitten:


When Do Cats Reach Social Maturity?

When your kitten enters about 6 months, it will become more needy or temperamental due to hormonal changes in your body.

By its second birthday, you may find that as a full-grown cat, your feline friend has become mellower and calmer. A spayed or neutered cat could remain more kitten-like than just an intact cat, preserving its playfulness well into old age and a strong desire for affection.

Adjusting To Changes During Cat Growth

As your kitten becomes an adult cat, its dietary needs change. Shift your kitten to adult cat food at around 12 months. After the first year, you may have to feed your cat fewer food every day, particularly if your kitten was spayed or neutered.

If you see your cat beginning to develop a pudgy belly, try cutting down on how much food you feed it. Shelters find it difficult to adopt an adult cat than just a kitten, but as his identity has already been developed, an adult cat also makes a good pet.

Final Thoughts

Your playful kitten grows rapidly into an adult cat, but don’t be tricked by appearances. Although kittens stop growing at one year of age, it is important to note that most kittens would look like an adult at six months old. Some feline maturity aspects occur faster than others. Your cat can make a significant difference in how fast your cat grows.

Naturally, feeding your cat a healthy balanced diet, always providing a source of fresh water, and enriching his surroundings with lots of exercises, areas to climb and places to explore will ensure that he not only grows strong and big but is the healthiest and happiest he could be!

Recommended Reading:

You may also like