When cats are sick, they can eat some cat food soaked in warm water or goat milk powder. They can also drink goat milk powder directly. You can also cook porridge directly for the cat. You can also feed the cat less canned food to avoid indigestion. When a cat is sick, it is best to feed it some food that is easier to digest and absorb. If possible, you can add a little chicken breast and fish to the porridge, which can supplement nutrients and enhance the cat's physical fitness.