My 10 yr old cat Baby suddenly (as of today) has diarreah, and I have no idea why. She's an indoor cat, and has been on the same food for awhile now (innova evo). I know with dogs it generally helps to feed a bland chicken and rice diet, but my cat so won't go for that, so I need some help (because she's err leaving messes wherever she sits after she's done using the litter box)