I have a 25 year old cat. Still going strong.
You must be treating that critter right.
My oldest kitty made it to just under 22.
He was as dumb as a sack of bricks, but such a sweet kitty.
WOW, you should apply and see if your cat can be in Guinness. We had one cat who made it to 19, that was the oldest. And she was like a little kitten the whole time.
That was because she had lived with my other cat Normie (age unknown). He was a big old cat and any cat that lived with him stayed tiny. We said that Normie stole their growth hormones.
I really think it was true.