Is Your Kitten Ready for Adult Cat Food?

Providing your kitten with the proper nutrition goes way beyond just putting fresh food in a clean bowl. Your kitten’s nutritional needs will change as their body develops through adolescence and into adulthood. Proper nutrition during these critical growth periods will help your kitten mature into a strong, healthy adult cat.

The nutritional needs of kittens and cats are vastly different, and it’s critical to give your pet premium age-appropriate nutrition. Here’s everything you need to know about kitten food vs. cat food and how to feed your growing kitten.

What to Feed a Kitten at Each Stage of Development

Rapid Growth Stage: 2 to 6 Months

After kittens are weaned, they enter a stage of rapid growth, which lasts until they’re 6 months old. They need a high-quality, balanced diet with every bite packed with the nutrients and energy needed to sustain such rapid development. The best choice is a premium kitten food with animal-based proteins. It should be highly digestible, nutrient-dense and designed to meet kittens’ unique nutritional needs, such as IAMS™ PROACTIVE HEALTH™ Healthy Kitten with Chicken.

Kittens require twice as much energy as adult cats on a per-pound basis. But their smaller mouths, teeth and stomachs limit the amount of food they can digest during a single meal. It’s best to divide the total daily food amount recommended on the kitten food packaging into three or four smaller meals.

Adolescence Stage: 6 to 12 Months

As kittens approach adult size, their nutritional requirements begin to change again. Their rate of growth begins to slow, activity levels may decline and they can start eating fewer, larger meals each day. During this stage, kittens begin to look like adults, but they are still growing and need the special nutrition found in kitten food. Continue feeding your adolescent kitten a high-quality kitten food, such as IAMS™ ProActive Health™ Healthy Kitten with Chicken.

During the adolescent growth stage, many cat owners are tempted to change a kitten’s food for variety. But cats do not get bored with a consistent diet of high-quality dry food, and giving a kitten “human food” and table scraps can lead to undesirable behaviors, such as begging or stealing food.

Additionally, feeding homemade diets, food formulated for adult cats (especially formulas designed for weight loss) or supplementing an already complete and balanced diet with vitamins could cause nutritional disorders. You can, however, supplement your kitten’s dry food with a nutrient-dense wet kitten or all-life-stages food for a nutritious — and tasty — change of pace.

Adult Stage: 12 Months and Beyond

At about 12 months of age, your kitten will reach their full adult size. Your young adult cat no longer needs calorie-dense kitten food to fuel growth and is ready for a diet of adult cat food.

When to Stop Feeding Your Cat Kitten Food

When your cat is about 12 months old, it’s time to switch to a maintenance formula adult cat food, such as IAMS™ ProActive Health™ Adult Original with Chicken. At this age, cats no longer need the extra calories and nutrients found in kitten food. As with any change in a cat’s diet, remember to gradually transition from kitten food to adult food over a period of several days.

How to Transition from Kitten to Adult Cat Food

To avoid intestinal upsets, make the change from a kitten formula to an adult diet over a period of four days with the following method:
  • Day One: Fill your cat’s dish with 75% kitten food and 25% adult food.
  • Day Two: Mix adult and kitten food in a 50/50 ratio.
  • Day Three: Feed your cat a mixture that's 75% adult food and 25% kitten food.
  • Day Four: Switch to 100% adult formula.
Because cats generally eat only what they need, free-choice feeding is fine for most cats. (With free-choice feeding, you can provide food to your cat around the clock and let them eat when and how much they need.) Indoor cats that don’t get much exercise, however, may overeat if fed free-choice. For them, portion-controlled feeding twice a day is a better routine.

To determine how much food to give your cat, check the recommendations of the pet food manufacturer on the label. Use the guidelines, monitor your cat’s weight and body condition during the transition, and adjust feeding portions if necessary. If your cat is gaining or losing weight and shouldn’t be, slightly adjust their daily intake and weigh them again the following week.

How to Choose an Adult Cat Food

Make sure to choose an adult cat food that provides the same high-quality nutrition as a premium kitten food. Downgrading to a basic nutrition brand at this stage of your cat’s life may upset their digestive system and won’t provide them with the same type of nutrition they were raised on. Premium foods like IAMS™ are formulated to meet all of your cat’s needs and provide additional benefits. They’re specifically designed to provide your cat with a formula that features:
  • High-quality ingredients
  • Complete and balanced levels of protein, fat, moderately fermentable fiber, carbohydrates, vitamins and minerals, which make costly supplements unnecessary
  • High-quality recipes and great taste
  • Standards that meet or exceed Association of American Feed Control Officials standards
  • Nutrient-dense formulas that are right for each life stage
  • Product guarantees
All of these premium features add up to a happy, healthy cat. With premium dry cat food, you can expect to see these important indicators of good health:
  • Exceptional muscle tone
  • A shiny, luxurious coat
  • Healthy skin and bones
  • Clear, bright eyes and clean teeth
  • Small, firm stools
Founded on decades of research, premium formulas from IAMS™ help maintain your cat’s health and help provide her with the nutrition she needs for a long life.