[header] How to change cat food [title] Pick cat food based on life stage. [step] The nutritional needs of your cat will change as they grow and age, so you should change their food when they are making a life transition. If your kitten is becoming a cat or your adult cat is becoming a senior, you should choose a food that is appropriate for their new stage of life. 
[substeps] Depending on their health and preferences, you may also want to switch between brands of cat food or between dry and wet varieties of food. [title] Mix the old with the new food.