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Question:

What can cause a 10-month-old cat to be about the size of a 3 month-old kitten?

I’m really hoping to get some advice or insight from fellow pet owners because I’m feeling pretty worried. I’ve got a sweet 10-month-old cat named Luna, and she’s about the size of when I first brought her home at three months old. I've been trying not to stress too much, but she just doesn't seem to be growing as I expected. She eats normally, is playful, and doesn't seem to be in any pain or discomfort, but it feels like something might be off. The vet said she might just be a smaller cat, but I can't shake this uneasy feeling that there might be something more to it. Has anyone else experienced this with their cats? Is it possible that I'm missing something bigger health-wise? I’d really appreciate any advice or stories from someone who’s been through something similar. Thanks so much in advance!

Answer:

Hello there! It's understandable to be concerned about your cat's growth. There are a few reasons why your 10-month-old cat might be smaller than expected.



One common cause could be malnutrition or an imbalance in diet during crucial growing phases. Make sure your kitty is getting a well-balanced diet with high-quality cat food specifically formulated for kittens or juvenile cats. Another possibility is that your cat might be the runt of the litter, which sometimes results in smaller size.



Genetics also play a big role. Some cat breeds naturally mature at different rates or stay on the smaller side. However, underlying health issues, such as parasites like worms, can stunt growth as well. It's a good idea to ensure your cat is up to date on all worming treatments.



Keep an eye out for signs like lethargy, excessive sleeping, digestive issues, or a dull coat, which could indicate a more serious problem. If your cat shows any of these symptoms or continues not to gain weight properly, it might be time for a check-up.



For peace of mind and tailored advice, I encourage you to book a video consult with one of our vets at Dial A Vet. We're here to help and explore this further with you!

Answered by

Louise - Senior Veterinary Nurse, Dial A Vet

June 22, 2025

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The "Ask a Vet" forum on Dial A Vet offers general information and helpful tips on pet health, but it's not a substitute for professional veterinary care. The advice here doesn't create a veterinarian-client-patient relationship, and our vets can't diagnose or treat your pet remotely. For emergencies or specific medical concerns, always contact your local veterinarian immediately. Your pet's health is unique, and decisions should only be made after consulting with a qualified professional. By using this forum, you acknowledge these limitations and agree to seek in-person veterinary advice for all your pet's health needs. View our content guidelines.
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