The Vets told us that they thought she had diabetes insipidus as well as genetic kidney problems, and possibly some neurological issues. They didn't give her a good prognosis. Told us that they would be surprised if she made it to her first birthday.
Well, we kept her on KD (Rx Kidney diet) and over the years she has had some 'issues' that had to be taken care of, but in general she survived much better than anyone expected. She has always drank an enormous amount of water and passed huge quantities of urine. She also has a strange anatomy... in that she is very wide across the shoulders and walks with a bit of a bowlegged front.
We've never been sure if she sees well as she has developed this habit of coming to us when we wag our hands at her. And she has never tried to climb or swat at things like other cats do. She does hear - as loud noises (like thunder) frighten her... and she's never been a lap cat but loves brushing and petting. All in all, she has been a sweet (albeit a bit odd) member of our family for 15 years.
But this weekend she seems to be failing. We will bring her to the Vet ASAP and see what is going on. But more than likely she is in kidney failure (with her age and underlying genetic conditions). We are bracing ourselves for this diagnosis as we have seen the signs too often lately. After losing both Tux and Julie last December and January, the end signs are not hard to read. I guess we should be happy that we had her this long... and we are.