That's not too awfully old. A lot of folks here have had them around into their late teens and early 20's.

Years ago I had 3 Siamese. The old man Ming was 20 when he passed on. The other 2 were between 11-13 if I remember correctly. Right now I have a resident stray. He showed up 7 years ago and never left. He was around 3 we think, when he showed up. He's an outside kitty - has a shelter to get out of the weather and all the good chow that he wants. He's quite content with his life, and hardly ever even leaves the yard. He knows that he's got it made!!!