My Cat Mika is around 20 months of age. she was a stray that adopted me back in April. When she was spayed at the vet in April this year, the vet informed she is around 1 yrs of age. I am a first time cat owner and don’t know that much about cats.

So I was just wondering at what age is a cat considered to be fully grown and an adult?

The rule of thumb is that girls reach full mature size by 2 years and boys by 3 years.

Their mental age is another thing completely and will depend on the cat. I felt Merson had 'grown up' by the time he was 8. Up till then he was still very kittenish in many aspects of his behaviour.

Oscar, on the other hand, was 'grown up' from about 3 years old.

Abby & McGee are approx 18-20 months and I think of them as kittens.

So it really comes down to how you want to define 'adult'. For feeding purposes - after a year. For size purposes - as above. For maturity levels...... depending on the cat.

I hope that sort of helps.

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Thanks for your comprehensive reply. I don’t think Mika acts very kitty though. I'm not sure though if this is to do with her having a litter? As when I found her in my shed she had given birth to two kittens.

Is she an only cat? You might find that she would be more 'young' if she had a fellow playmate.

We found Abby (who had had a litter of 4 kittens before we got her) has become much more playful since we got McGee. She did try to play with the OAP's but they weren't interested. Since McGee came along though, it / she has been wonderful. 2 young cats the same age is just SO much fun.

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Yes, she is the only cat, although she does swipe the dog's sides sometimes when they pass her to instigate play but my dogs don’t react to her, but that may be because I have trained the dogs to leave her.

I did say only last night that I would like to get another cat so Mika has a playmate, but my OH said NO, no way.

When we had the kittens I wanted to keep them both but my OH wouldn’t have it. I then suggested we keep at least one, but he was adamant we couldn’t keep another cat. He has compromised though and said when we move to a bigger house, we could perhaps have a look for another cat then. Cant wait to move now!

My two Burmese are 7 and still think they're kittens.