What to Feed a Kitten: A Beginner’s Guide

Bringing a new kitten home is exciting, but it also comes with lots of questions. One of the most common is simple: what should you feed them? Good nutrition plays a vital role in healthy growth, strong bones and teeth, brain development, and building a strong immune system. Feeding the right food from the start can help set your kitten up for a healthy life.

In this beginner’s guide, we explain what kittens need to eat, how often to feed them, when to change their diet, and what to avoid. We will also cover when it is sensible to speak to your veterinary surgeon if you are worried about your kitten’s appetite, growth, or digestion.

This article is intended for general guidance only and should not replace professional veterinary advice. If your pet is unwell or showing concerning symptoms, please contact your veterinary surgeon.

Why kittens need a special diet

Kittens are not just small adult cats. They grow very quickly, which means they need more energy, protein, and certain nutrients than adult cats do. A complete kitten food is specially designed to support this rapid development.

In general, kitten diets are made to provide:

• Higher protein levels to support growth and muscle development
• Balanced calcium and phosphorus for healthy bones and teeth
• Essential fats for energy and brain development
• Vitamins and minerals to support the immune system and overall health
• A suitable texture and size for smaller mouths and developing teeth

Choosing a food labelled as “complete” is important, as this means it should provide all the nutrients your kitten needs when fed correctly.

What type of food should kittens eat?

Complete kitten food

The best choice for most kittens is a high-quality complete kitten food. This may be wet, dry, or a mixture of both. Many owners choose to feed a combination, as this can offer variety in texture and may help some kittens stay well hydrated.

If you are looking for suitable options, our cat food & treats collection includes products for different ages and needs.

Wet kitten food

Wet food can be especially helpful for kittens because it is soft, easy to eat, and contains plenty of moisture. This can support hydration, which is particularly useful for cats, as some naturally drink less water than they should.

Wet food may be a good option for:

• Young kittens moving on from milk
• Kittens who prefer softer textures
• Kittens who need encouragement to eat

Dry kitten food

Dry food can also be a suitable part of a kitten’s diet. It is convenient, easy to store, and some kittens enjoy the crunchy texture. If you feed dry food, always make sure fresh water is available at all times.

Some owners feed both wet and dry foods to give their kitten variety and flexibility. The key is to make sure both foods are complete and suitable for kittens.

What about milk?

Many people think kittens need a saucer of cow’s milk, but this is a common misunderstanding. Most kittens do not tolerate cow’s milk well, and it can cause digestive upset such as diarrhoea.

Kittens should stay with their mother and nurse until weaning begins naturally. If a kitten is orphaned or needs hand-rearing, they should only be fed a proper kitten milk replacer recommended by a veterinary professional.

If you have a very young kitten and are unsure what to feed, please contact your veterinary surgeon promptly for advice.

When do kittens start eating solid food?

Kittens usually begin the weaning process at around 3 to 4 weeks of age. During this stage, they gradually move from mother’s milk or milk replacer on to solid food. This is normally done with soft, easy-to-eat kitten food.

By around 8 weeks of age, most kittens are fully weaned and should be eating complete kitten food on its own. This is also the age when many kittens go to their new homes.

If your kitten is under 8 weeks old, or if you are unsure whether they are eating enough, it is worth seeking veterinary advice.

How often should you feed a kitten?

Kittens need to eat little and often because they have small stomachs and high energy needs. Feeding frequency changes as they grow.

A general guide

• Up to 8 weeks: often requires frequent small meals, depending on weaning stage
• 8 to 12 weeks: around 4 small meals a day
• 3 to 6 months: around 3 meals a day
• 6 months and over: often 2 to 3 meals a day, depending on the kitten and the food used

Always check the feeding guide on the packaging, as this will usually give a useful starting point based on your kitten’s age and weight. Keep in mind that these are only general guidelines. Some kittens may need slightly more or less depending on their breed, body condition, activity level, and health.

How much should you feed?

The right amount depends on your kitten’s age, expected adult size, and the calorie content of the food. Feeding too little may affect growth, while overfeeding can lead to excessive weight gain.

To get started:

• Use the food packaging as a guide
• Weigh your kitten regularly if possible
• Keep an eye on body condition rather than relying on appetite alone
• Ask your veterinary surgeon if you are unsure

Kittens should grow steadily, but they should not become noticeably overweight. If your kitten seems pot-bellied, is not gaining weight, or has ongoing diarrhoea, worms or another health issue may need to be ruled out. Preventative care is important, and you can find relevant options in our cat flea, tick and worming products collection if your veterinary surgeon has advised treatment.

When should you switch to adult cat food?

Most kittens stay on kitten food until around 12 months of age. However, this can vary slightly depending on breed and growth rate. Larger or slower-maturing cats may sometimes need a different feeding plan, so it is worth asking your veterinary surgeon if you are unsure.

When the time comes to change to adult food, do it gradually over 7 to 10 days. Mix a little of the new food into the old food and slowly increase the amount. This can help avoid digestive upset.

Foods kittens should not eat

Some human foods are unsuitable for kittens, and some can be dangerous. It is safest to stick to a complete kitten diet unless your veterinary surgeon recommends otherwise.

Avoid feeding:

• Cow’s milk
• Dog food, as it does not meet a kitten’s nutritional needs
• Raw diets unless specifically advised and safely managed, as these may carry infection risks
• Onions, garlic, chocolate, grapes, raisins, and alcohol
• Cooked bones
• Large amounts of liver or fish intended for humans
• Table scraps and heavily seasoned foods

If your kitten eats something potentially harmful, contact your veterinary surgeon as soon as possible.

Supporting healthy digestion

A mild change in stools can sometimes happen when a kitten moves to a new home, changes food, or feels stressed. However, ongoing diarrhoea, vomiting, poor appetite, or lethargy should not be ignored, especially in young kittens, who can become dehydrated quickly.

To support a healthy digestive system:

• Change food gradually
• Feed measured meals at regular times
• Make sure fresh water is always available
• Keep feeding bowls clean
• Follow a suitable worming plan recommended by your veterinary surgeon

If your cat has an ongoing sensitive stomach or digestive issue later in life, our cat digestion products page may be helpful alongside veterinary advice.

Should kittens have supplements?

Most healthy kittens fed a complete, balanced kitten food do not need extra supplements. In fact, adding supplements unnecessarily can sometimes upset the nutritional balance of the diet.

That said, there are situations where a veterinary surgeon may recommend additional support. If you are considering nutritional support products, you can browse our cat supplements and premium supplements ranges, but it is always best to check first that they are appropriate for your kitten’s age and needs.

Signs your kitten may need veterinary advice

It is sensible to contact your veterinary surgeon if your kitten:

• Refuses food for more than one meal
• Has diarrhoea lasting more than 24 hours
• Vomits repeatedly
• Seems weak, sleepy, or less responsive than usual
• Is not gaining weight or appears thin
• Has a swollen belly, especially with poor growth
• Struggles to chew or swallow

Young kittens can become poorly quite quickly, so early advice is always best.

Helpful kitten care beyond feeding

Feeding is just one part of keeping your kitten healthy. Regular flea and worm prevention, vaccinations, neutering advice, and routine health checks all matter too. If your kitten is prescribed treatment by your vet, we provide guidance on how to order a prescription medicine, along with answers to common questions on our prescription FAQs page.

You can also browse our wider cat collection for everyday healthcare products, food, and wellbeing support.

Conclusion

Feeding a kitten does not need to be complicated, but it does need care and consistency. A complete kitten food, regular meals, fresh water, and close attention to growth and digestion will give your kitten the best possible start. Avoid unsuitable foods, make dietary changes gradually, and do not be afraid to ask your veterinary surgeon for advice if anything seems off.

At Vetscriptions, we are here to help UK pet owners make informed, confident choices about their pets’ health and wellbeing. If you are preparing for a new kitten or supporting a growing young cat, you can explore our website, browse our cat products, or contact us for general product guidance. If your kitten is unwell or you are worried about their eating, always speak to your veterinary surgeon promptly.

With the right nutrition and a little support, your kitten can get off to a happy, healthy start.