Our expert says:
Wow, that is a fantastic age. I would suggest you take your kitty to the vet. Sometimes they might look healthy from the outside, but cats are very intelligent and would try and tell us that something is wrong by doing what you just explained. They could suffer from a cystitis or some kidney stones or diabetes. Have a health check done first and from there you could look at behavioural side or things.
Please notify me if you have done so and still need help.
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