Wow, 24 is really getting up there. How are her kidneys? It’s pretty rare for a cat that age not to have at least somewhat impaired kidney function. If she has even slightly above normal kidney values, I’d strongly suggest you join the Feline-CRF-Support Yahoo Group. There is major, major expertise there that will definitely increase the quality and length of any renal-impaired kitty’s life.
She saw the vet a year ago and they said everything was fine except a bit of teeth cleaning. They said nothing about kidneys, so I guess she's ok on that for now.
I had never heard about failing kidneys in old cats but I guess that makes alot of sense. I'll look into that support group, thanks for the info. My oldest, bestest friend is way worth it.
I think the best thing you can do for your cat OR your dog is feed them a proper diet. No table scraps is the number one rule for keeping pets healthy. It's the biggest mistake that pet owners make is to give them people food, it makes them sick right away and will kill them early in the long run. People food is way too rich for them and can really mess with their GI tract, and probably weaken their kidneys (I'm just speculating on that because you mentioned it).
Anyway, good food, fresh water, daily brushing (hairball prevention), and tons of love and attention along with 13 lives worth of luck will give a cat a good long lifetime.