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When Does My Kitten Become a Cat? With Growth Chart (Vet-Verified)

By Christian Adams · Reviewed & fact-checked by Dr. Marta Vidal-AbarcaVet Approved
Dr. Marta Vidal-Abarca
Reviewed & Fact-Checked byDr. Marta Vidal-AbarcaBVSc GPCert Ophthal MRCVS (Veterinarian)
Dr. Marta has over 16 years of veterinary experience, working across the UK and Spain as a remote veterinary consultant and in the clinic. She graduated from Cardenal Herrera-CEU University in Valencia, Spain. She holds two Ophthalmology Certificates, GPCert Ophthal from ESVPS and UAB. She has wide experience in small animal internal medicine and surgery with a soft spot for cats. Marta is a member of the Royal College of Veterinary Surgeons, and her main fields of interest are ophthalmology and critical care medicine. Dr. Marta loves being able to share the most helpful information with pet parents across the world as one of Catster's in-house veterinarians. She wants to provide details that can help in all aspects of pets' lives with their beloved ones. She loves knowing that she can support our readers and communicate about any medical topic that might be relevant to their pet's health and well-being.View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Read about our vets
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Tiny kittens develop and change so quickly that you might be wondering at exactly what age your roly-poly kitten turns into an adult cat. The general guideline is that kittens become adult cats once they pass their first birthday.

Let’s take a look at the stages that your kitten will go through as they head into adulthood.

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The Stages of Kitten Growth

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1 Week to 3 Weeks Old

At 1 week of age, kittens will be spending most of their time sleeping and eating. Kittens will start to open their eyes around 2 weeks of age, and their ear canals will open at roughly 3 weeks. Kittens of this age need help peeing and pooping, and their mother cats do this after they’ve eaten.

Image By: New Africa, Shutterstock

1 Month Old

By now, a kitten can pee and poop on their own, and their teeth are starting to break through. Kittens at this age will be more mobile. They’ll be spending more time exploring their surroundings and starting to build up muscle. At a month to 5 weeks old, most kittens will start being weaned onto solid kitten food.


2–6 Months Old

Kittens can start to be vaccinated at around 8–12 weeks. At this age, they can also leave their mother cat and travel to their new homes. At this age, kittens are active and need to be eating an energy-dense diet as their bones, muscles, and all their organs develop. Kittens’ stomachs are still small, so they will need to eat several times during the day.

At around 6 months old, kittens can be spayed or neutered. This helps prevent unwanted litters and reduces the risks of them developing certain hormone-related health issues and unwanted behaviors later in life, like urine spraying.


6 Months Old & Up

By 6 months old, kittens are looking more like a mini adult cat. At 6 months, most kittens will have their full set of adult teeth.


12 Months Old

Happy birthday! By the time your kitten is a year old, they’re considered an adult cat.

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Switching to Adult Cat Food

Once your kitten reaches around 8-10 months, you can begin thinking about transitioning them to an adult cat food rather than the kitten food that they’ve been eating up to this point. It’s a good idea to speak to a vet about this process, as it can depend on the breed, size, and lifestyle of the individual cat.

Make sure any food that you choose is approved by the Association of American Food Control Officials for the maintenance life stage of cats. Kitten food should only be used for the growth and development phase. Each formula contains balanced nutrition for that particular life stage and shouldn’t be used interchangeably.

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Conclusion

Watching your kitten grow into a healthy adult cat is a rewarding experience. Making sure they have access to the correct food and veterinary care is essential to give your kitten the best start in life. Of course, plenty of cuddles and playtime with their new owners is also obligatory!

See Also:


Featured Image By: Liliya Kulianionak, Shutterstock

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