Feeding a puppy is the one nutritional job where getting it wrong has permanent consequences. Adult dogs can be slimmed down. A skeleton that grew too fast cannot be un-grown. Most of the errors are small, reasonable-looking decisions that compound over the four to eighteen months a puppy spends growing.
Mistake one: reading the chart as a target rather than a starting point
Every bag has a feeding chart, and every chart is a population average built around a hypothetical puppy. Yours is not that puppy. Two Labradors of the same age and weight can differ by a third in what they need, depending on activity, metabolism and whether they have been neutered.
Use the chart to set your starting amount. Then adjust based on the dog in front of you, reassessed every two weeks.
Mistake two: not measuring
A “cup” scooped by hand varies by up to thirty per cent depending on how it is filled and settled. Over a year that is an enormous amount of food.
Weigh the food on kitchen scales. It takes four seconds, it is accurate, and it means that when you do need to adjust, you are adjusting from a known quantity rather than a guess.
Mistake three: feeding to the puppy’s weight instead of its expected adult weight
This one catches nearly everyone with a large breed. Charts for large-breed puppies are often keyed to expected adult weight, not current weight. Feed a four-month-old Labrador the amount listed beside its current 15 kg and you may be badly underfeeding or overfeeding depending on which column you read.
Check the column heading. If you are not sure what your puppy will grow into, ask the breeder or your vet for an estimate.
Mistake four: letting a large-breed puppy grow as fast as it can
Fast growth is not good growth. In large and giant breeds, growing too quickly is strongly associated with developmental orthopaedic disease: hip and elbow dysplasia, osteochondrosis, and painful growth-plate problems.
The evidence here is unusually clear. In a long-running study of Labradors, dogs fed to stay lean throughout life lived around two years longer than their littermates fed twenty-five per cent more, and showed much later onset of hip arthritis.
Large-breed puppies should be kept lean and grow steadily. Slightly slower is better.
Mistake five: treats not counted
Training a puppy means a lot of food out of your hand. That is correct and necessary — do not stop. But it has to come out of the daily allowance, not sit on top of it.
The working rule is that treats stay under ten per cent of daily calories. With a puppy in intensive training, that is easiest to manage by using kibble from the daily ration as training currency and reserving high-value treats for genuinely hard exercises.
Mistake six: not changing the number of meals
Meal frequency should drop as the puppy grows, but the total should be adjusted at the same time.
- Eight to twelve weeks: four meals a day
- Three to six months: three meals a day
- Six months onward: two meals a day
Small breeds sometimes need to stay on three meals longer because of low blood sugar risk. Giant breeds often benefit from staying on three meals well past six months to reduce the volume of any single meal.
How to tell if you have got it right
Forget the scales for a moment and use your hands. Every two weeks:
- Run your fingertips flat along the ribcage. You should feel ribs easily under a thin covering, like the back of your hand rather than your knuckles or your palm.
- Look down from above. There should be a visible waist behind the ribs.
- Look from the side. The belly should tuck up towards the hind legs, not run parallel to the ground.
A puppy at the right weight looks slightly too thin to most owners. That instinct is the problem: decades of pictures have recalibrated what we think a normal dog looks like.
Storage matters too
Fat in dry food goes rancid once the bag is opened, and the fat-soluble vitamins degrade with it. Keep the food in its original bag, rolled and clipped, inside an airtight container rather than tipped loose into the bin.
IRIS USA Airtight Pet Food Storage Container
A sealed container with a latching lid that keeps humidity and air out. Put the whole bag inside rather than decanting, so you keep the batch code and the best-before date.
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When to change food
Puppies move to adult food when growth is essentially finished: around twelve months for small and medium breeds, and fourteen to twenty-four months for large and giant ones. Transition over ten to fourteen days, mixing gradually.
If your puppy is gaining too fast, too slowly, or has persistently loose stools, talk to your vet before making big changes. Growth is the one window where guessing costs the most.
