I have 2 persians, a brown mactabby and a blue-cream. Both females, spayed, 1 year old. The blue, Belle can eat anything and it dos`nt bother her. The tabby Betsy has never had a solid stool. I have them both on wild blue grain free. ONE DAY IT IS ALOMOST NORMAL, BUT NEVER VERY SOLID SND THE NEXT DIY IT IS PUDDING , WHICH STICKS TO ALL THAT BOTTOM HAIR. I have kept her on dry only, but that isn`t working. They came from a very high end breeder who tested free of everything and guarntees all cats. She thinks it is a food allergy. Any ideas