There is usually a moment. Your hand goes over your dog’s side and you have to press a little to find the ribs. Or a photo from eighteen months ago looks different from the dog asleep on the floor in front of you.
When a dog is above their ideal body condition, moving gradually back towards it can make everyday movement easier and support their longer-term health. For a dog carrying a little extra, the method is straightforward. Work out where they actually are. Set a sensible starting portion. Keep an honest eye on the extras. Keep movement regular. Review the result rather than guessing.
This article is about that dog. A dog who is significantly overweight, who is still growing, or who has a health condition, needs a plan their vet sets rather than a calculation.
You almost certainly did not do anything wrong
Weight gain in dogs is rarely neglect. It is small kindnesses that accumulate faster than anyone notices.
The scale of it is worth knowing, because it tells you something useful about the nature of the problem. In UK Pet Food’s 2024 obesity report, vets estimated that around half of UK dogs are overweight, while only 4% of owners thought their own pet needed to lose weight. Half of the owners surveyed had never discussed their pet’s weight with a vet or veterinary nurse.
That is not a country full of careless owners. It is a recognition problem. You see your dog every day, and a gradual change is the hardest kind to see. The fix starts with looking differently, not with feeling worse.
Raw food does not change the rules
Worth saying plainly, because a fair amount of raw feeding content implies otherwise. Raw is not inherently slimming. Weight change still depends on total energy intake, your dog’s energy needs, activity and consistency, whatever form the food takes.
That is better news than it sounds. It means there is nothing exotic to learn. The principles below are the ordinary ones.
Use your hands as well as the scale
The scale is useful, but it cannot tell you the whole story. Two dogs of the same breed at the same weight can be in completely different condition, because weight does not distinguish muscle from fat.
Vets assess three things together: body weight, body condition, and muscle condition. The scale shows the direction of travel. Condition tells you what that weight means.
The World Small Animal Veterinary Association’s 9-point body condition scale is a widely used veterinary reference, and it is free to look at. On that scale, 4 to 5 out of 9 is ideal: ribs readily felt with little or no excess covering, a visible waist, and an abdominal tuck. Body condition comes down to three quick checks: ribs, waist and tuck. Muscle condition is worth noticing alongside them.
Ribs. Rest both hands flat on the ribcage and press lightly. Each rib should be easy to feel through a thin covering. If firm pressure is needed, your dog may be above ideal. If the ribs stand out sharply to the eye, they may be below it.
Waist. Look down at your dog from above. There should be a visible narrowing behind the ribs. A straight line from ribs to hips, or a widening, may indicate extra weight.
Tuck. Look from the side. The belly should rise from the ribcage towards the back legs rather than running level.
Muscle. Run your hands over the spine, shoulders and hips as you go. If those feel bonier than they used to while the waist stays hidden, that is worth noticing. Condition improving should not mean muscle disappearing.
Two honest caveats. A thick coat hides a great deal, so on a Husky or a Golden Retriever your hands are considerably more reliable than your eyes. And breed shape matters. A Whippet in ideal condition looks lean in a way that would be concerning on a Labrador.
Then repeat the check monthly. It catches drift while it is still small.
Why body condition changes the starting portion
A starting portion should reflect the condition you are aiming for, rather than treating today’s number on the scale as though it were already ideal. That is why a proper calculation asks about body condition as well as weight.
The underlying reason is that energy needs do not rise in a straight line with body weight. A dog twice as heavy does not need twice the calories, because the requirement scales with body size rather than in direct proportion to it. This is why percentage-of-bodyweight rules of thumb drift at both ends. Our calculator article covers that arithmetic, and How Much Raw Food Should I Feed My Dog covers portioning in general.
The number starts you. Your dog finishes it
We should be straight about the limits of any calculation, including ours.
Published energy requirements for dogs cover a genuinely wide range. Two dogs of the same weight, age and apparent activity can differ substantially in what they actually need. Metabolism, temperament, neuter status, coat, climate and the honest amount of daily movement all pull the figure around.
So a calculated portion is a well-founded starting point, chosen carefully. It is not a measurement of your individual dog. It gets you close on day one and saves you from guessing.
What refines it is what you find on the scale and under your hands a few weeks later. The number starts you. Your dog finishes it.
What the plan does not know about
A feeding calculation can only account for the intake it has been given. It works out a requirement, and assumes the meal is the thing that meets it.
Everything else is invisible to it. Training treats, dental chews, the last of the toast, the cheese that hides the tablet. Extras are easy to under-count precisely because they do not look like meals.
That makes extras the most useful place to look rather than the most awkward. They are the one part of the picture the calculation never saw, which is exactly why they are the first thing to review when condition is not moving as you expected.
In practice: keep them few and keep them small. Veterinary guidance puts treats below 10% of daily calories, and lower again while a dog is losing weight. Ten per cent is a ceiling, not a target.
The household has to agree, too. A plan only works if everyone who feeds the dog is running the same one, which usually means one person owning the daily portion and everyone else knowing what counts.
Keep movement regular, not heroic
Weight is not only an intake question. Consistent activity supports mobility and helps preserve muscle while condition improves.
Do not suddenly impose hard exercise on a dog who is overweight, older, or uncomfortable. Build gradually. If your dog has joint, heart or breathing problems, ask your vet what is appropriate before increasing activity.
Regular and moderate beats occasional and strenuous.
Change slowly, and expect it to take months
Veterinary weight-loss plans commonly aim for gradual loss, often around 1% of body weight per week. The right rate varies from dog to dog, and faster is not better. Rapid loss can mean intake has been cut too hard, or that something else is going on.
Weigh your dog every two to four weeks if you can, and repeat the hands-on check monthly. Progress may slow as weight and energy needs change. That is a prompt to review, not to make a sudden large cut.
If nothing has changed after four to six weeks, review the whole intake first: treats, chews, scraps, and whether everyone in the house is following the same plan. Recalculate if condition or activity has changed. What you should not do is keep cutting the main meal indefinitely. If you are confident the plan has been followed and body condition still has not improved, ask your vet to review the target and your dog’s health before cutting the meal further.
Sudden weight change needs veterinary advice too, in either direction, and particularly alongside lethargy, altered appetite, increased drinking, or coat changes. Several treatable conditions can present with unexplained weight change, and that is a different problem from a portion.
The method, brought together
Check condition as well as weight. Set a sensible starting portion from weight and body condition. Keep extras few, and account for them honestly. Keep movement regular. Review the result rather than guessing, and give it weeks to show.
For a dog carrying a little extra, that is the work. Most of it is attention rather than restriction.
Our calculator turns your dog’s details, body condition included, into a practical daily feeding plan. If their condition changes, recalculating takes about a minute.