Good feeding is one of the simplest ways to protect overall dog health. What goes in the bowl affects their energy, coat, weight, digestion and how well they age. Understanding dog nutrition ensures you feed the right amount as well as the right food.

For most dogs, the best approach is a commercial food labelled “complete” for their life stage, fed in measured portions that you adjust to keep them at a lean, healthy body condition, with fresh water always available. That one habit covers protein, fats, vitamins and minerals in the right balance without guesswork.

Portions are where many owners slip. Obesity is common in pet dogs, and once extra weight goes on, it is hard to take off. With a kitchen scale and a few minutes a week, you can stop it before it starts. Grab your dog’s current food bag and check its label as you read, so you can make changes today.

Key Takeaways

• Choose a food labelled “complete” for your dog’s age and size.

• Weigh daily portions and adjust them by body condition, keeping dog treats small.

• Talk to your vet before homemade diets, supplements or weight-loss plans.

What Nutrients Does Your Dog Need?

Sound dog nutrition relies on six core components: protein, fat, carbohydrates (with fibre), vitamins, minerals and water. Each nutrient supports everyday dog health, and the amounts must sit in the right balance for your dog’s age.

Protein and Fats for Growth, Repair and Energy

Protein is made of amino acids. Your dog uses them to build and repair muscle, keep skin and coat healthy, and make hormones, enzymes and antibodies. Dogs need 10 essential amino acids that their bodies cannot make, so these must come from food.

Good protein sources include:

• Meat and poultry

• Fish, such as salmon or white fish

• Eggs

• Some plant proteins from legumes and grains

Most foods mix several sources to cover every amino acid. More protein is not always better. Extra protein simply gets burned for energy.

Fat is the most concentrated energy source in dog food. It holds about 2.25 times more calories per gram than protein or carbohydrates. Fat also helps your dog absorb vitamins A, D, E and K, and it supplies omega-3 and omega-6 fatty acids for a glossy coat and healthy skin. Too little fat can leave the coat dull and dry. Too much raises the risk of weight gain and, in some breeds, pancreatitis.

Carbohydrates and Fibre for Energy and Digestion

Dogs are omnivores. They can digest cooked starches from grains, potatoes and vegetables, which give steady energy. Carbohydrates can reduce how much animal protein and fat a dog needs to meet their energy needs, while also adding vitamins and minerals.

Fibre is different. Dogs cannot fully digest it, but it still helps by:

• Keeping stools firm and regular

• Feeding healthy gut bacteria

• Helping dogs feel full, which supports weight control

Foods such as pumpkin, carrots and sweet potatoes for dogs add natural fibre in small amounts.

Vitamins and Minerals in the Right Proportions

Vitamins help with metabolism, immunity, eyesight and blood clotting. Minerals such as calcium and phosphorus build bones and teeth, while others control nerves, muscles and fluid balance.

Balance is the key word here. Too little can harm your dog, and so can too much. A lack of vitamin D, for example, can cause bone problems and lameness. Excess calcium in large-breed puppies can disturb bone growth. This is why adding random supplements to an already complete food is risky. A good complete food already contains the right mix.

Why Fresh Drinking Water Is Essential

Water supports almost every job in the body, from digestion to keeping cool. Your dog should always have clean, fresh water, topped up at least once a day and swapped out whenever it looks dirty.

Dogs on dry food drink more than dogs on wet food, because wet food holds a lot of moisture. Keep bowls clean, and put an extra one out in hot weather or after long walks. Skip cow’s milk as a drink; many adult dogs struggle to digest lactose, which is why whether dogs should drink milk is a common worry.

How Do You Choose a Complete and Balanced Food?

Pick a food that is labelled “complete” for your dog’s species and life stage, then choose the format (dry, wet or fresh) that suits your dog and budget. The label tells you far more about a food’s value than the front-of-pack marketing.

Understanding Complete vs. Complementary Food Labels

In the UK, every pet food falls into one of two groups:

Label	What it means	How to use it
Complete	Contains all the nutrients your dog needs	Can be fed as the whole diet
Complementary	Missing some nutrients	Use only alongside a complete food

Dog treats, mixers, toppers and many “meaty” pouches are complementary. If you feed them as a main meal, your dog will miss out on key nutrients. The British Veterinary Association advises you to look for “complete” rather than “complementary” and check that the food suits your dog’s life stage.

What UK Labels and FEDIAF Guidelines Tell You

FEDIAF is the European pet food industry body. It publishes nutritional guidelines that UK manufacturers use to formulate complete foods. A food made to these guidelines meets minimum levels for nutrients such as protein, fat, vitamins and minerals, and stays under maximums for some.

On the back of a UK pack, check:

• Complete or complementary statement

• Life stage, such as puppy, adult or senior

• Analytical constituents, listing protein, fat, fibre and ash percentages

• Composition, the ingredient list in descending order by weight

• Feeding guide with daily amounts by weight

Do not judge a food on its ingredient list alone. The list says nothing about ingredient quality, which is why the WSAVA recommends using more important label information to select a food, such as who formulates it and what quality checks the maker carries out.

Comparing Dry, Wet and Fresh Food

All three formats can be complete. The best choice suits your dog’s teeth, appetite, weight and your budget.

Format	Strengths	Points to watch
Dry (kibble)	Cheaper per day, easy to store and measure	Calorie dense, so overfeeding is easy
Wet	Tasty, adds water, good for fussy or older dogs	Costs more, spoils once opened
Fresh (cooked, often delivered)	Very palatable, portioned for your dog	Highest cost, needs fridge or freezer space

Many owners mix wet and dry. If you do, cut each portion so the total stays within your dog’s daily needs. You can weigh up the pros and cons of wet or dry dog food for your own dog’s habits, or compare the best dry food for dogs if kibble suits your routine.

What to Know About Homemade and Raw Diets

Homemade food is hard to balance. Recipes from the internet often fall short on calcium, zinc, vitamins or essential fatty acids. If you want to cook for your dog, ask your vet to refer you to a veterinary nutritionist, who can write a recipe with the right supplements.

Raw feeding brings two main risks. Raw meat can carry bacteria such as Salmonella and E. coli, which can affect your dog and the people in your home. Many raw diets have been found to be lacking in one or more essential nutrients, and strong proof of benefits is missing. If you still choose to feed raw food for dogs, pick a commercial complete raw product and handle it like raw meat for people.

How to Change Your Dog’s Food Gradually

Switching foods suddenly can cause an upset stomach or diarrhoea. Swap over across seven to ten days:

1. Days 1 to 3: 75% old food, 25% new food

2. Days 4 to 6: 50% old, 50% new

3. Days 7 to 9: 25% old, 75% new

4. Day 10: 100% new food

Go slower if your dog has a sensitive stomach. If loose stools last more than a day or two, drop back a step. Check with your vet if symptoms persist, especially if you suspect a dog food allergy.

How Do Feeding Needs Change With Age?

Puppies need nutrient-dense puppy food for growth, adults need enough to stay lean, and older dogs often need fewer calories but good-quality protein. Size also changes the timeline, with giant breeds growing for longer and ageing sooner than small dogs.

Choosing Puppy Food for Healthy Growth

Puppies grow fast and have small stomachs. They need a dedicated puppy food labelled complete for growth, which holds more calories, protein and carefully set calcium and phosphorus levels than adult dog food.

Large and giant breed puppies need a puppy food made for large-breed growth. These foods control energy and calcium to help bones and joints develop at a safe pace. Overfeeding a large puppy so it grows faster raises the risk of joint problems. Brand choice is a big decision for these dogs, so it helps to know which dog food brands offer the best nutrition for large breeds.

When to Move From Puppy to Adult Dog Food

Switch to adult dog food once your dog has finished growing. As a rough guide:

• Small and medium breeds: around 12 months

• Large and giant breeds: often 18 to 24 months

Begin the change over a week or two using the steps above. Neutering also lowers energy needs, so watch your puppy’s waistline after surgery and trim portions if they start to gain.

Matching Adult Meals to Size and Activity

Adult dogs need enough food to hold a healthy weight and no more. A working Border Collie burns far more than a Basset Hound who naps most of the day.

Adjust for:

• Activity: working and very active dogs need more food

• Size: small dogs need more calories per kilo of body weight than big dogs

• Neutering: neutered dogs usually need fewer calories

• Season: some dogs exercise less in winter and need slightly less food

A standard adult dog food formulated for maintenance suits most healthy adults.

Does Your Older Dog Need Senior Dog Food?

Many older dogs do well on a senior food, but it is not a must. Energy needs drop with age; one study showed an average 25% decrease in energy needs in 11-year-old dogs compared with 3-year-olds of the same breeds.

Older dogs also lose muscle. Keeping a healthy weight and lean muscle is one of the main factors linked to longer life and wellbeing in older pets, which is why good protein still matters for seniors who are not ill.

Very old dogs sometimes lose weight because their smell, teeth or appetite fade. Softer or warmer food helps. Ask your vet whether your dog would benefit from a senior food or simply a smaller portion of their adult dog food, and whether natural joint supplements for dogs are worth adding for stiff joints.

How Much and How Often Should You Feed Your Dog?

Start with the feeding guide on the pack, weigh the daily amount, and split it into two meals for most adults. Routine monitoring is central to dog health. Check your dog’s body every couple of weeks and adjust by about 10% at a time until they hold a healthy shape.

Using Feeding Guides and Measuring Daily Portions

The pack’s feeding guide gives a daily amount based on your dog’s weight. Treat it as a starting point. Calculators and guides are only estimates, and an individual dog’s needs can be as much as 50% more or less than average.

Use digital kitchen scales in place of a scoop or cup. Scoops vary, and a heaped scoop can add a lot of extra calories each day. Weigh the full day’s food in the morning, then split it into meals. If your dog gets wet and dry food, use both feeding guides and halve each amount. A full dog feeding guide can help you set a starting figure.

Checking Weight and Body Condition

Scales show the number, but body condition shows the shape. At a healthy weight, your dog should have:

• Ribs you can feel easily under a thin layer of fat

• A visible waist when you look from above

• A tummy that tucks up when viewed from the side

If you cannot feel the ribs, cut the daily portion by about 10%. If the ribs, spine or hip bones stick out, increase it by about 10%. Recheck every two to four weeks. Many vet practices let you use their scales for free.

Setting Meal Times for Puppies and Adults

Regular meal times help digestion, toilet training and calm behaviour. A simple pattern:

Age	Meals per day
8 to 12 weeks	4
3 to 6 months	3
6 months onwards	2
Adults	2 (some do well on 1)

Feed at roughly the same times each day. Lift the bowl after 20 minutes if your dog walks away, to avoid grazing. For deep-chested breeds such as Great Danes, two smaller meals and rest after eating help lower the risk of bloat. You can match meals to your puppy’s age with a puppy feeding schedule by age.

Keeping Dog Treats Within 10% of Daily Calories

Dog treats should make up no more than 10% of your dog’s daily calories. The other 90% should come from their complete food. Extra dog treats add up fast, especially for small dogs.

To keep dog treats in check:

• Break dog treats into tiny pieces for training

• Use some of your dog’s daily kibble as rewards

• Offer low-calorie snacks such as carrot or cucumber

• Cut meal portions slightly on heavy training days

Choosing healthy training treats for dogs helps, and so does knowing what dogs can eat and not eat. Grapes, raisins, chocolate, onions and xylitol are toxic to dogs.

Supporting Overweight Dogs With a Vet-Led Plan

If your dog is overweight, book a weight check with your vet before cutting food hard. Your vet will work out a target weight and a safe daily calorie amount, and rule out problems such as an underactive thyroid.

A good plan includes:

• A set daily amount of food, weighed each day

• A weight-loss diet if your vet suggests one, which keeps nutrients up while cutting calories

• Weigh-ins every two to four weeks

• A gentle rise in walks and play

Steady loss of around 1 to 2% of body weight per week is a common vet target. Crash dieting can lead to muscle loss and missing nutrients.

When Appetite, Weight or Drinking Changes Need Veterinary Advice

Changes in eating or drinking can be early signs of illness. Contact your vet if your dog:

• Refuses food for more than 24 hours, or a puppy skips more than one meal

• Loses or gains weight without a change in diet

• Drinks much more or less than usual

• Vomits, has diarrhoea for more than a day or two, or has blood in stools

• Struggles to chew or drops food

A sudden rise in thirst can point to problems such as kidney disease or diabetes. Note when you first saw the change and how much your dog drinks, as this helps your vet.

Build a Feeding Routine That Fits Your Dog

A good feeding routine comes down to four habits: a complete food for your dog’s life stage, weighed portions, set meal times and regular body checks. Once those are in place, small tweaks keep your dog lean and healthy through every stage of life.

Use this weekly checklist:

• Daily: weigh food, refresh water, note appetite

• Weekly: count dog treats against the 10% limit

• Every two to four weeks: check ribs, waist and weight

• At life changes: review food after neutering, at adulthood and in the senior years

Change foods slowly over seven to ten days. Save homemade, raw or supplement plans for a chat with your vet first. Keep a simple note on your phone of your dog’s weight, food brand and daily amount, so any vet visit starts with clear facts. My Life My Dog has more guides on feeding, dog health and training to support each step.

Frequently Asked Questions

What is the best dog nutrition plan?

The best dog nutrition comes from a complete and balanced food made for your dog’s life stage and size, fed in the right amount. It should provide protein, fat, carbohydrates, vitamins, minerals and constant access to fresh water. Your vet can help match a food to any dog health needs.

Does my dog need nutritional supplements?

Most healthy dogs on a complete food do not need supplements. Adding extra vitamins or minerals can upset the balance and cause harm, such as too much calcium in growing puppies. Some dogs benefit from vet-advised extras, such as joint support or omega-3 for skin.

Can homemade food provide everything my dog needs?

Homemade food can work, but only with a recipe written by a veterinary nutritionist. Most home recipes miss key nutrients such as calcium, zinc or certain vitamins. Without expert input, a commercial complete food is the safer choice.

Are two eggs enough for a dog’s daily diet?

No, eggs alone cannot meet your dog’s daily needs. They are a good source of protein and some vitamins, but they lack the full balance of minerals, fibre and nutrients a complete diet provides. Offer cooked egg as an occasional treat and count it within the 10% treat allowance.

Is grain-free dog food healthier?

Grain-free food is not healthier for most dogs. Grains supply energy, fibre and nutrients, and true grain allergies are rare. Choose grain-free only if your vet confirms a specific grain allergy or other medical reason.