If you decide to transition your cat to different food, do so gradually. For instance, you decide to dump a dry-food regimen for wet food,, which contains the protein that cats desire without carbohydrates that can become problematic for overweight cats.
If you decide to switch food brands because the one you are currently feeding your cat is no longer available. Plan several days, ideally one week, to introduce this dietary change to your cat. Otherwise, she will have no interest in dining.
Every cat will respond differently to dietary changes. Some can stomach a quick change, but most need time to adjust. If possible, your cat should be transitioned slowly from one food to another. Sudden changes in your cat’s diet can cause gastrointestinal upset and may result in diarrhea, vomiting, and even a reduced appetite for your cat. Go slow with the transition. This process may take much longer than a week, depending on your individual cat. Start by mixing old and new food, and the mealtime switch will be minimally disruptive. Your cat’s litter box will be the best place to check for answer.
Day 1: 90 percent original food, 10 percent new food
Day 2: 80 percent original food, 20 percent new food
Day 3: 70 percent original food, 30 percent new food
Day 4-10: continue pattern of decreasing original food and adding more of the new food