How to Switch Your Cat's Food

Every cat parent wants to feed their feline companion the best possible nutrition. But your cat's nutritional needs change as they grow — feeding kitten food to an older cat (or vice versa) won't give them what they need. Here's how to know when it's time to switch, and how to do it right.

Nutrition for Kittens

Kittens develop rapidly in their first few months. Most double their birth weight by two weeks old. Around four weeks, mothers begin weaning — this is when to introduce solid food. Make sure they have the right food and water bowls from the start. Follow these steps to transition from mother's milk to kitten food:

• Step 1 – Place a dish of water with the kittens. Within 4–5 days they should start drinking from it.
• Step 2 – Mix a small amount of wet food into the water, plus a separate bowl of plain water.
• Step 3 – Gradually increase wet food and decrease water until they're eating only wet food.
• Step 4 – Start mixing in a small amount of dry kitten food.
• Step 5 – Gradually increase dry food and decrease wet food over about three weeks total.
• Step 6 – Continue feeding kitten food until 12 months old. Even at 6 months when they look like adults, they still need kitten-formula nutrients.

Choose a nutrient-dense food with highly digestible animal-based proteins. Kittens have twice the energy needs per pound of adult cats. Because of their small mouths and stomachs, divide meals into several smaller portions throughout the day. For more detail, see our guide on what to feed your new kitten.

Transitioning From Kitten Food to Adult Cat Food

When Is the Right Time?

Around your cat's first birthday is the right time to begin transitioning to adult food. Most cats do well on a regular maintenance formula, but talk to your vet if your cat may need a specialty formula like weight management or hairball control. Read our adult cat nutrition guide for what to look for.

How to Transition

Gradual change is key — rushing the transition can cause stomach upset or food rejection:

• Days 1–2: 75% old food, 25% new food
• Days 3–4: 50% old, 50% new
• Days 5–6: 25% old, 75% new
• Day 7+: 100% new food (if digesting normally)

Also consider whether to mix wet and dry food — see our article on wet vs. dry cat food for guidance.

When to Transition to Senior Cat Food

Most cats enter their senior years around age 7. At this point, switch to a senior formula designed to support their changing needs. Follow the same gradual transition steps above.

What to Look for in a Senior Cat Food

As cats age, their metabolism slows. Look for a calorie-efficient recipe to prevent weight gain, with more fiber and water content to keep their digestive tract healthy.

Signs of a Healthy Cat

A cat getting the right nutrients will look and feel great. Signs of good health include:

• Smooth, supple skin and a shiny, lustrous coat
• Good muscle tone
• Clear, bright eyes and clean teeth
• Small, firm stools

If your cat isn't looking or feeling their best, schedule a vet appointment — it could be a nutritional gap, underlying condition, or environmental factor.