What to Feed a Puppy: Nutrition Basics

Bringing home a new puppy is exciting, but it also comes with plenty of questions – and one of the biggest is what to feed them. Good nutrition during puppyhood plays a vital role in healthy growth, strong bones and teeth, brain development, and supporting the immune system as your puppy settles into family life.

Choosing the right food can feel overwhelming, especially with so many options available. The good news is that most puppies do very well on a complete, balanced puppy food suited to their age, size, and breed type. In this guide, we explain the basics of puppy nutrition, how often to feed, what to avoid, and when to speak to your veterinary surgeon.

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 puppy nutrition matters

Puppies grow quickly, particularly during the first few months of life. Their bodies need the right balance of protein, fat, vitamins, minerals, and energy to support:

• Healthy muscle and tissue growth
• Bone and joint development
• Brain and eye development
• A strong immune system
• Healthy skin and coat
• Good digestion and steady growth

Puppies are not simply small adult dogs. They have different nutritional needs, which is why feeding a food labelled as complete puppy food is so important. Adult dog food may not provide the right levels of nutrients for a growing puppy.

What should puppies eat?

Choose a complete puppy food

The best place to start is with a complete commercial puppy food. “Complete” means it is designed to provide all the nutrients your puppy needs in the correct proportions. This is generally the simplest and safest option for most owners.

You can find a wide range of dog food options in our dog food and treats collection, including products suitable for different life stages and dietary needs.

Wet, dry or mixed feeding?

Many puppies do well on either wet food, dry food, or a mixture of both. Each option has benefits:

• Dry food: convenient to store, easy to measure, and often helpful for routine feeding
• Wet food: highly palatable and useful for puppies who are fussy or need extra encouragement to eat
• Mixed feeding: can provide variety in texture and taste, while still keeping meals balanced

Whichever type you choose, make sure it is suitable for puppies and follow the feeding guide on the packaging as a starting point.

Breed size matters

Small, medium, and large breed puppies can have different nutritional requirements. Large and giant breed puppies, in particular, need carefully balanced nutrition to support steady growth without putting excess strain on developing bones and joints.

If you have a large breed puppy, such as a Labrador Retriever, German Shepherd, or Great Dane, it is worth choosing a large breed puppy food specifically formulated for slower, controlled growth. If you are unsure which food is best, your veterinary surgeon can advise you.

Key nutrients puppies need

You do not need to calculate nutrients yourself if you are feeding a complete puppy food, but it can be helpful to understand what a good puppy diet provides.

• Protein: supports growth, muscle development, and body repair
• Fat: provides concentrated energy and supports skin, coat, and brain development
• Calcium and phosphorus: important for strong bones and teeth, especially in growing puppies
• DHA and other fatty acids: help support brain and eye development
• Vitamins and minerals: support the immune system, metabolism, and overall health
• Fibre: helps maintain healthy digestion

It is usually best to avoid adding supplements unless your veterinary surgeon has recommended them. Giving extra calcium or other nutrients unnecessarily can sometimes do more harm than good, particularly in large breed puppies.

If your vet suggests additional support in certain situations, you can explore our dog supplements and premium supplements ranges.

How often should you feed a puppy?

Puppies need smaller, more frequent meals than adult dogs because their stomachs are small and they use a lot of energy growing and playing.

As a general guide:

• Up to 8–12 weeks: 4 meals a day
• 3–6 months: 3 meals a day
• 6 months onwards: often 2 meals a day, depending on breed and individual needs

Try to feed meals at regular times each day. Consistent routines help with digestion, toilet training, and settling your puppy into home life.

Always check the feeding amount on the food packaging, but remember these are general guidelines. Your puppy’s ideal portion will depend on age, breed, expected adult size, activity level, and body condition.

How to tell if your puppy is eating the right amount

It is not just about what you feed, but also how much. Overfeeding can contribute to excessive weight gain, while underfeeding may affect growth and energy levels.

Signs your puppy may be on the right track include:

• Steady growth rather than rapid weight gain
• Good energy levels and normal playfulness
• A shiny coat and healthy skin
• Firm, well-formed stools
• A visible waist when viewed from above, depending on breed

If your puppy seems pot-bellied, is gaining weight quickly, has frequent digestive upset, or seems constantly hungry or lethargic, speak to your veterinary practice for advice.

Changing your puppy’s food

If you need to change your puppy’s diet, do so gradually over around 7 to 10 days. Sudden changes can upset the digestive system and lead to diarrhoea or vomiting.

A gradual transition might look like this:

• Days 1–3: 75% current food, 25% new food
• Days 4–6: 50% current food, 50% new food
• Days 7–9: 25% current food, 75% new food
• Day 10: 100% new food

If your puppy develops an upset stomach during the change, slow the transition down and contact your veterinary surgeon if symptoms persist.

Treats, chews and extras

Treats can be useful for training and bonding, but they should be given in moderation. Too many treats can upset the nutritional balance of your puppy’s diet and lead to unwanted weight gain.

As a rule, treats should make up no more than 10% of your puppy’s daily food intake. Choose treats suitable for your puppy’s age and size, and avoid anything too hard that could damage developing teeth.

You can also use some of your puppy’s normal kibble as training rewards. This is a simple way to keep calories under control while reinforcing good behaviour.

Foods puppies should avoid

Some human foods are not safe for dogs and can cause serious illness. Never feed your puppy:

• Chocolate
• Grapes or raisins
• Onions, garlic, leeks, or chives
• Alcohol
• Xylitol-sweetened products, such as some sugar-free gum and sweets
• Cooked bones
• Very fatty or heavily seasoned foods
• Blue cheese or mouldy foods

If your puppy has eaten something potentially toxic, contact your veterinary surgeon immediately.

Water is just as important

Fresh, clean drinking water should always be available. Puppies can become dehydrated more quickly than adult dogs, especially if they are very active or have an upset stomach.

Make sure water bowls are easy to reach, cleaned regularly, and refilled throughout the day.

Common feeding problems in puppies

My puppy is a fussy eater

Some puppies are simply adjusting to a new home, routine, or brand of food. Try offering meals at set times and removing the bowl after 15 to 20 minutes if the food is not eaten. Avoid constantly changing foods unless there is a genuine problem, as this can sometimes make fussiness worse.

If your puppy refuses food for more than a meal or two, or has other symptoms such as vomiting, diarrhoea, lethargy, or weight loss, contact your veterinary surgeon.

My puppy has diarrhoea

Mild digestive upset can happen with sudden food changes, stress, or eating something unsuitable. However, puppies can become unwell quite quickly, especially when very young. Persistent diarrhoea, vomiting, blood in the stool, or reduced energy should always be checked by a vet.

If your puppy has a sensitive stomach, your veterinary practice may recommend a specific diet or digestive support. You can also browse our dog digestion products for vet-recommended support where appropriate.

My puppy seems to scratch a lot after eating

Food reactions are possible, although itchiness in puppies is also commonly linked to parasites or skin irritation. If you are concerned about itching, sore skin, or digestive signs linked to food, your vet can help investigate the cause. Supportive products are available in our dog allergy and dog skin and coat collections.

Do puppies need worming and other preventative care?

Yes. Good nutrition is only one part of keeping your puppy healthy. Preventative care, including flea treatment, worming, vaccinations, and routine vet checks, is also essential.

Puppies are particularly vulnerable to intestinal worms, which can affect growth and overall health. Your veterinary surgeon will advise you on a suitable parasite control plan based on your puppy’s age and lifestyle. You can browse our dog flea and worming products and wider flea, tick & worming collection for appropriate options.

When to contact your veterinary surgeon

It is always sensible to seek veterinary advice if you are unsure about your puppy’s diet or growth. Contact your veterinary practice promptly if your puppy:

• Stops eating or has a poor appetite
• Has repeated vomiting or diarrhoea
• Is losing weight or not growing as expected
• Seems weak, lethargic, or depressed
• Has a swollen abdomen, pain, or signs of discomfort
• May have eaten a toxic food or foreign object

If your puppy is prescribed medication or a specific veterinary diet, we can help you understand the ordering process through our prescription information page and prescription FAQs.

Supporting your puppy’s healthy start

Feeding a puppy does not need to be complicated. In most cases, the best approach is to choose a complete puppy food suited to your dog’s age and size, feed regular measured meals, limit treats, and make any dietary changes gradually. Alongside regular vet checks and preventative care, good nutrition gives your puppy the best possible start in life.

At Vetscriptions, we are here to help pet owners make informed, confident choices about their pets’ wellbeing. You can browse our dog collection for food, supplements, and everyday healthcare products, or contact us if you need help finding the right product. If you have concerns about your puppy’s appetite, digestion, or growth, please speak to your veterinary surgeon for tailored advice.

From all of us at Vetscriptions, we wish you and your puppy a happy, healthy start together.