Q. My cat is 14 years old and is on Hill's z/d diet, but now in the last few months he is pooping soft on my carpets. Is he allergic to his foood?
JESSICA L DESROSIERS
A. Z/D is usually the food recommended for pets that are having allergies or problems with digestion. However, some ingredients in foods such as wheat, corn or soy products may cause digestive upset to continue occurring. A probiotic such as Fort-flora from your vet, or a spoonful of plain yogurt added to meals may help with digestive upset, or a spoonful of pureed pumpkin may help to firm up stools in minor issues.
However, if your cat continues to have digestive issues even with supplements added in, it is a good idea to speak with your veterinarian. Your vet may be able to recommend a different prescription diet for your cat's digestive issues, or can recommend foods that are free of common allergens such as grains for your cat to try.