Well, my cat has a problem with her kidneys. They seem to be not functioning all too well. We noticed because she stopped washing her back, which resulted in a bad fur hygiene, and something that looked like early rastafari dreads. We went to see a vet, who told us that it could be either the cat being obese (not being able to lick her back because the fat is in the way), or a kidney problem (the kidneys are situated on the lower back so washing that area would hurt). The chances of a kidneyproblem were smal, because my cat is only 2.5 years old, and kidneyproblems are only frequent with old cats. They did a bloofproof, and the kidneys are the problem. She now is on a special diet, and she seems to be better, but it still sucks, bigtime. Anyway, I really really hope she gets better. I know that loosing pets is part of keeping them, but I'm not prepared to loose her already. Wish her luck.