Updated September 2026
Knowing your dog’s weight is useful.
Knowing what their body actually feels and looks like is even more useful.
Two dogs can weigh exactly the same and have very different body conditions. Breed, build, muscle, age and individual shape all matter.
That is why veterinary professionals use body condition scoring alongside the number on the scales.
For most healthy adult dogs, look for ribs you can feel easily without pressing hard, a visible waist from above, and an abdomen that tucks up when viewed from the side.
You should not need to squeeze through a thick layer of fat to find the ribs.
Equally, most dogs should not have ribs, spine and hip bones prominently sticking out.
There are breed and individual differences, particularly with naturally lean dogs such as sighthounds, so body condition should be assessed rather than judged from one photograph or target weight.
For my wider feeding advice, start with my Dog Food & Nutrition Guide.
Summary
- Weight alone does not tell you whether your dog is in healthy condition.
- Body Condition Score, or BCS, assesses body fat by looking at and feeling the dog’s shape.
- The commonly used nine-point scale places most dogs in ideal condition around 4 to 5 out of 9.
- You should normally be able to feel your dog’s ribs easily without pressing hard.
- Viewed from above, your dog should have a visible waist behind the ribs.
- Viewed from the side, the abdomen should tuck upwards rather than hanging straight down or bulging.
- Body condition and muscle condition are not the same thing.
- Older dogs can lose muscle while still carrying excess body fat.
- Weigh food rather than estimating portions with a cup or handful.
- Treats, chews, training rewards, food toys and table scraps all count towards the day’s intake.
- Exercise is important, but an overweight or unfit dog should not suddenly be given intense exercise.
- Unexplained weight gain or weight loss deserves veterinary advice.
- Plan significant weight-loss programmes with your veterinary team rather than relying on a crash diet.
What is a healthy weight for a dog?
No single healthy weight applies to every dog of a particular breed.
Even within the same breed, dogs can differ in:
- height
- frame
- muscle
- sex
- age
- activity
- genetics
A number on the scales is therefore only part of the picture.
What matters is whether that weight is appropriate for the individual dog.
This is where body condition scoring becomes useful.
The PDSA Body Condition Score guidance recommends using both your hands and your eyes to assess your dog’s shape rather than relying on body weight alone.
What is a dog Body Condition Score?
A Body Condition Score, usually shortened to BCS, is a way of assessing how much body fat a dog is carrying.
Veterinary professionals commonly use a nine-point scale.
On that scale:
- 1 to 3 is under ideal condition
- 4 to 5 is generally considered ideal
- 6 to 9 is above ideal condition
A score of 9 represents severe excess body fat.
The BSAVA recommends the 1 to 9 body condition scoring system and describes it as the most extensively validated system for assessing body fat in dogs and cats.
Your veterinary practice can show you how to assess your own dog.
Once you know what to look and feel for, it becomes much easier to notice gradual changes.
How do I check my dog’s body condition at home?
Use both your hands and your eyes.
Do not rely only on photographs.
Coat length can hide a surprising amount.
Feel the ribs
Gently run your hands over your dog’s ribcage.
In a dog in healthy body condition, you should generally be able to feel the ribs with a light touch.
You should not have to press firmly through a thick layer of fat to find them.
For most breeds, the ribs should not stick out prominently either.
Look from above
Stand above your dog while they are standing naturally.
Look for a waist behind the ribcage.
The body should normally narrow before widening again around the hips.
If the outline is almost straight or oval with no obvious waist, your dog may be carrying excess body fat.
Look from the side
The abdomen should normally rise up behind the ribcage.
This is often described as an abdominal tuck.
A belly that hangs down or bulges can be one sign that the dog is carrying excess weight.
Feel along the back
You should be able to feel the spine and hip area without needing to push through a heavy covering of fat.
But prominent bones can also indicate that a dog is underweight or losing muscle.
Check the base of the tail
Excess fat can also collect around the base of the tail.
You should not normally find a substantial fatty pad there.
The PDSA’s guide to checking your dog’s body shape takes you through these same practical checks.
What does an ideal Body Condition Score look like?
On the commonly used nine-point system, most dogs in ideal body condition fall around 4 or 5.
Typically:
- the ribs can be felt easily
- there is a visible waist from above
- there is an abdominal tuck from the side
- bones are not hidden beneath a heavy layer of fat
- ribs, spine and hip bones are not excessively prominent
This is a guide rather than a reason to force every dog into exactly the same silhouette.
Breed shape matters
A Whippet should not be judged against the body shape of a Labrador.
A Greyhound naturally looks different from a Cocker Spaniel.
Some healthy sighthounds may have more visible rib definition than you would normally expect in many other breeds.
Heavy coats can make some dogs look larger than they really are.
Other body types can make waist shape harder to judge visually.
That is another reason to use your hands as well as your eyes.
Bodyweight and body condition are not the same thing
Scales tell you what your dog weighs.
Body condition tells you something about how much of that body is fat.
You need both.
Imagine two dogs each weighing 20kg.
One may have good muscle development and an appropriate covering of fat.
The other may have much less muscle and considerably more body fat.
The scales show the same number.
Their body composition is different.
This becomes particularly important as dogs get older.
Body condition is not the same as muscle condition
This distinction is easily missed.
Body Condition Score assesses fat stores.
Muscle Condition Score assesses muscle.
The WSAVA Global Nutrition Toolkit treats them as separate assessments because a dog can lose muscle without necessarily becoming obviously thin.
[EXTERNAL LINK: WSAVA Global Nutrition Toolkit]
An older dog, for example, might lose muscle along the back or hindquarters while still carrying excess fat elsewhere.
Looking only at the scales could miss that change.
This is one reason I would be particularly cautious about automatically reducing an older dog’s food simply because they are less active.
Look at the whole dog.
For more on later-life changes, see my Senior Dog Care Guide.
Why does healthy body condition matter?
Maintaining an appropriate body condition is part of looking after your dog’s overall health and welfare.
Excess body fat can affect:
- movement
- stamina
- joint loading
- breathing
- heat tolerance
- ability to exercise comfortably
- existing medical conditions
- overall quality of life
The British Veterinary Association describes obesity as a serious clinical and welfare concern and notes that its causes can involve diet, activity, genetics, neutering, health and owner behaviour.
The aim is not to make every dog thin.
The aim is an appropriate condition for that individual dog.
Weight also matters for joints and movement
Every extra kilogram is weight your dog has to carry.
That can be particularly relevant for dogs with mobility or joint problems.
My Dog Breeds Prone to Joint Problems: Signs to Watch For guide explains why maintaining an appropriate weight can be an important part of supporting joint health.
[INTERNAL LINK: /dog-breeds-prone-to-joint-problems.html]
But weight is only one possible contributor to changes in movement.
If your dog suddenly becomes reluctant to walk, develops a limp, struggles to get up or changes how they use stairs, do not simply assume they need a diet.
Pain and other medical problems can cause changes in movement.
For more on recognising those changes, read What I Notice on a Dog Walk: Small Changes Worth Mentioning to Your Vet.
Why do dogs become overweight?
There is rarely one universal reason.
In simple terms, weight tends to increase when energy intake regularly exceeds the amount being used.
But the reasons that happens can be quite complicated.
They may include:
- portions that are too large
- treats
- chews
- table scraps
- food used for training
- several people feeding the same dog
- reduced activity
- ageing
- neutering
- genetics
- breed tendencies
- illness
- medication
- difficulty exercising comfortably
The BVA describes obesity as multifactorial rather than simply a matter of owners not walking their dogs enough.
That distinction matters.
I would rather work out what is actually happening than blame either the owner or the dog.
Start by measuring what your dog actually eats
If your dog’s weight is gradually increasing, one of the most useful first steps is to find out how much food is really being eaten.
Not how much you think is being fed.
What actually goes into the dog.
For a few days, include:
- breakfast
- dinner
- treats
- chews
- dental products
- training food
- lick mats
- stuffed toys
- scraps
- food used for medication
- treats from other family members
It can be surprisingly easy for each person in a household to think they are giving only a little.
Weigh dog food rather than guessing
For dry food especially, I prefer weighing portions in grams.
A scoop or mug can vary considerably depending on how full it is.
UK Pet Food recommends using accurate kitchen scales because manufacturers’ feeding guides are based on weight and volume estimates can be inaccurate.
[EXTERNAL LINK: UK Pet Food Calculating How Much to Feed]
Your dog’s feeding guide is still only a starting point.
Two dogs eating the same product may need different amounts to maintain healthy body condition.
For more detail, read How Much Should I Feed My Dog?
Treats still count
Treats aren’t calorie-free just because you use them for training.
The same applies to:
- dental chews
- natural chews
- cheese
- chicken
- food toys
- lick mats
- pieces of sausage
- table scraps
A common guideline is to keep treats and extras to about 10% or less of total daily calorie intake.
UK Pet Food recommends that around 90% of calorie intake come from the complete main diet, with no more than about 10% from treats and snacks.
My Dog Treats: How to Choose the Right Treats for Your Dog guide looks at this in more detail.
Use some normal food for training
One easy way to control additional food is to use part of the dog’s measured daily allowance as training rewards.
That will not work for every situation.
Your dog may need something more valuable when:
- practising around distractions
- working on recall
- dealing with something difficult
- learning in a new environment
But a simple check-in at home may not require a large piece of cheese.
My Training Rewards for Dogs guide explains how I match the reward to the situation.
Does my dog just need more exercise?
Not necessarily.
Exercise matters enormously for physical health, movement, enrichment and general wellbeing.
But I would not respond to an overweight and unfit dog by suddenly doubling their exercise.
Fitness should build progressively.
An overweight dog may already find movement harder or have an underlying joint, breathing or health problem.
My Dog Walking and Everyday Exercise Guide explains why exercise should suit the individual dog rather than simply chasing distance or tiredness.
The goal is not:
“How can I exhaust my dog enough to burn this food off?”
It is to create a sustainable balance of appropriate nutrition, sensible portions, enjoyable movement and good overall health.
Walking can help, but food still matters
A lovely walk is not a licence for unlimited treats afterwards.
Equally, reducing food does not remove the dog’s need for enjoyable movement and enrichment.
Think of healthy weight as a whole routine rather than a punishment programme.
Depending on the individual dog, useful activity might include:
- regular walks
- sniffing
- gentle hills
- play
- reward-based training
- food searches
- appropriately paced longer walks
- shorter walks more frequently
The amount and type depend on the dog’s age, health, mobility, confidence and current fitness.
If your dog is overweight
I would start with your veterinary practice.
That is particularly important if your dog is substantially overweight or has other medical problems.
A veterinary professional can:
- confirm body condition
- check an accurate weight
- consider medical factors
- advise on an appropriate target
- assess muscle condition
- review the existing diet
- calculate suitable food quantities
- decide whether a specific weight-management diet is appropriate
- monitor progress
The BSAVA advises that significant weight reduction should be controlled and nutritionally appropriate, rather than achieved by simply cutting a normal maintenance food so severely that essential nutrients may become inadequate.
This is why I would avoid crash diets.
Do not simply halve your dog’s food
If a dog needs to lose weight, it can be tempting to take whatever they currently eat and cut it dramatically.
That is not necessarily the safest approach.
A complete maintenance food is formulated to provide nutrients when fed in appropriate quantities.
If it is drastically restricted for a long time, the dog may receive less of essential nutrients as well as fewer calories.
Your veterinary team may instead recommend:
- a modest adjustment to the existing food
- a properly formulated weight-management food
- changes to treats
- a different feeding routine
- an individual activity plan
The correct plan depends on the dog.
What if my dog is underweight?
Being too thin also deserves attention.
Signs can include:
- ribs becoming very prominent
- spine and hips becoming increasingly visible
- reduced muscle
- an exaggerated waist
- unexpected weight loss
Do not solve unexplained weight loss simply by adding lots of treats.
Weight loss can have many causes.]
Your vet may need to work out why the weight has changed before deciding how much or what type of food should be added.
My dog is eating normally but losing weight
That is still worth discussing with your vet.
A normal or increased appetite does not rule out a health problem.
Useful information to take with you includes:
- recent weights
- when you first noticed the change
- what food is being fed
- the daily amount
- treats and extras
- appetite
- thirst
- stool changes
- vomiting
- activity
- medication
- any other behavioural or physical changes
Sudden weight gain also deserves attention
Not every increase in weight is simply because somebody gave too many biscuits.
Speak to your veterinary practice if your dog gains weight unexpectedly, particularly if there are other changes such as:
- reduced energy
- increased thirst
- changes in appetite
- swelling
- changes in coat or skin
- difficulty exercising
- medication changes
- altered behaviour
A number on the scales cannot tell you the cause.
Puppies need a different approach
A puppy is supposed to gain weight.
They are growing.
The aim is appropriate, controlled development rather than keeping them as light as possible.
Rapid growth is not something to encourage by feeding excessive amounts.
Large and giant breed puppies need particular care because appropriate energy and mineral intake matter while their skeleton develops.
Use a complete diet suitable for growth and monitor development with your veterinary practice.
My Puppy Feeding Guide covers this in detail.
Do not put a growing puppy onto a weight-loss programme without veterinary guidance.
Healthy weight in older dogs
Senior dogs deserve particular attention because weight can move in either direction.
Some become less active and gradually gain fat.
Others lose weight or muscle.
Sometimes both happen together.
An older dog can carry excess body fat while also losing muscle from the back and hindquarters.
That is why body condition and muscle condition need to be considered separately.
Changes in:
- weight
- muscle
- appetite
- thirst
- mobility
- toileting
- chewing
- swallowing
should not automatically be dismissed as normal ageing.
My Senior Dog Care Guide covers the wider changes worth watching for.
[INTERNAL LINK: /5-things-your-old-dog-would-like-you-to-understand.html]
Small dogs and hidden extras
Portion control can be particularly easy to get wrong with small dogs.
An extra biscuit may look tiny to us.
To a small dog, it can represent a much larger proportion of the day’s energy requirement.
My Small Dog Care Guide covers feeding, body condition, exercise and handling specifically for smaller dogs.
The principle is the same regardless of size.
Count what actually goes into the dog.
Neutering and weight
Neutering can affect energy requirements in some dogs.
That does not mean every neutered dog must become overweight.
It does mean their portions and body condition may need monitoring as their needs change.
Do not automatically cut food by an arbitrary percentage.
Use the feeding guide as a starting point and adjust according to the individual dog’s body condition and veterinary advice.
What about so-called light dog food?
Do not assume that the word “light” means you can feed unlimited amounts.
You still need to feed it in appropriate quantities.
If your dog genuinely needs therapeutic weight reduction, ask your veterinary team whether an appropriately formulated weight-management diet would help.
There is a difference between casually choosing a lower-calorie product and managing clinical obesity.
Should I weigh my dog regularly?
Yes, particularly if:
- you are deliberately changing their weight
- they are a growing puppy
- they are older
- they have a medical condition
- their appetite has changed
- their activity has changed
- you have recently changed their food
- you have noticed a change in body shape
Try to use reasonably consistent weighing conditions.
For a small dog, home scales may be practical.
For larger dogs, your veterinary practice may be the easiest option.
But remember that bodyweight should be considered alongside body condition and, where relevant, muscle condition.
Keep a simple record
You do not need an elaborate spreadsheet.
Record:
- date
- weight
- Body Condition Score if known
- food and daily amount
- major treats or chews
- activity changes
- anything else unusual
Photographs taken from above and from the side in the same standing position can also help you notice gradual changes.
They should support body-condition assessment rather than replace actually feeling the dog.
What I notice as a dog walker
I do not diagnose obesity or decide a dog’s target weight.
That belongs with the owner and veterinary team.
What I can notice during regular one-to-one walks is when something changes from that dog’s normal.
For example:
- they tire sooner than usual
- hills have become harder
- they need more pauses
- their usual harness appears to fit differently
- movement looks less comfortable
- they take longer to recover after activity
- they appear to have gained or lost noticeable condition
None of those observations tells me why.
But a change can be worth mentioning.
That is one advantage of walking the same dog regularly rather than treating every outing as an isolated hour.
For more on the sort of changes I watch for, read What I Notice on a Dog Walk: Small Changes Worth Mentioning to Your Vet.
[INTERNAL LINK: /what-i-notice-on-a-dog-walk-small-changes-worth-mentioning-to-your-vet.html]
Healthy weight without making walks miserable
Weight management should not turn every interaction with your dog into calorie counting.
Dogs still need:
- sniffing
- exploration
- play
- training
- social contact where appropriate
- rest
- enjoyable walks
- enrichment
Food is only one possible reward.
Depending on the dog, you can also reward with:
- access to an interesting sniff
- a toy
- play
- praise
- moving forward
- a favourite activity
That can be particularly useful for dogs whose daily calorie allowance needs closer control.
When should I speak to my vet?
Ask your veterinary practice for advice if:
- you cannot tell whether your dog is overweight or underweight
- their weight changes unexpectedly
- your dog has a Body Condition Score outside the ideal range
- you are planning significant weight loss
- your dog is very overweight
- your dog is underweight
- your puppy is growing unusually quickly or slowly
- your senior dog is losing weight or muscle
- appetite changes
- thirst changes
- vomiting or diarrhoea persists
- mobility changes
- your dog has a medical condition
- medication may be affecting appetite or weight
Do not wait until a weight problem has become dramatic.
Veterinary nurses are often very experienced in weight and nutrition clinics and can help with measurement, monitoring and realistic plans.
A simple healthy-weight check
If you want a quick routine at home, ask:
Can I feel the ribs easily?
You should generally be able to feel them with light pressure.
Can I see a waist from above?
The body should normally narrow behind the ribs.
Is there an abdominal tuck?
From the side, the abdomen should rise behind the ribcage.
Has anything changed?
Compare your dog with themselves a month or two ago rather than with somebody else’s dog.
What are they actually eating?
Include meals, treats, chews, scraps and training food.
How are they moving?
Notice stamina, comfort and recovery.
Is their muscle changing?
Particularly in older dogs, look beyond fat and weight.
Do I need veterinary help?
If you are unsure, ask.
Frequently asked questions
What should a healthy-weight dog look like?
For most dogs, you should be able to feel the ribs easily, see a waist from above and see an abdominal tuck from the side.
Breed and individual build need to be considered.
What is a good Body Condition Score for a dog?
On the commonly used nine-point scale, 4 to 5 out of 9 is generally considered ideal.
Should I be able to see my dog’s ribs?
For most breeds, you should be able to feel the ribs easily but not see them prominently.
Naturally lean breeds such as some sighthounds can look different, so assess the individual dog.
Is my dog overweight if I cannot see their waist?
Lack of an obvious waist can indicate excess body fat, but assess the whole dog and ask your vet or veterinary nurse if you are unsure.
Is weighing my dog enough?
No.
Weight is useful, but Body Condition Score assesses fat and Muscle Condition Score assesses muscle.
All can provide different information.
How often should I check my dog’s body condition?
Check it regularly.
Doing a quick look-and-feel check during grooming or routine handling makes it easier to notice gradual changes.
Can I just feed less if my dog is overweight?
A small adjustment may sometimes be appropriate, but significant weight reduction is best planned with your veterinary team.
Simply cutting a maintenance food drastically can reduce essential nutrient intake as well as calories.
Should I exercise my overweight dog more?
Appropriate activity can help, but increase exercise gradually.
An overweight or unfit dog should not suddenly be pushed into intense or very long exercise.
Ask your vet if mobility, breathing or another health issue is a concern.
Do treats cause dogs to gain weight?
They can contribute if they are added on top of an already sufficient diet.
Treats, chews, training rewards and food toys all count towards total intake.
Can I still use food for training?
Yes.
You can use some of the measured daily food allowance for straightforward training and keep higher-value rewards small when they are needed.
My dog is losing weight. Should I just feed more?
Not until you have considered why.
Unexpected weight loss can be associated with health problems and should be discussed with your vet.
Can an older dog be overweight and lose muscle at the same time?
Yes.
Body fat and muscle are assessed separately.
An older dog can retain or gain fat while losing muscle, particularly along the back and hindquarters.
Related Finchley Dog Walker guides
How Much Should I Feed My Dog?
Dog Treats: How to Choose the Right Treats for Your Dog
Dog Walking and Everyday Exercise
Small Dog Care: Exercise, Health and Handling
Dog Breeds Prone to Joint Problems
What I Notice on a Dog Walk: Small Changes Worth Mentioning to Your Vet
Final thoughts
A healthy weight is not simply a number on a set of scales.
Look at the dog in front of you.
Feel their ribs.
Look for their waist.
Check their abdominal tuck.
Notice their muscle.
Measure what they actually eat.
Watch how they move.
Then keep an eye on changes over time.
The aim is not to make dogs as thin as possible or to put them through a miserable diet and exercise regime.
It is to maintain an appropriate body condition that supports comfortable movement, health and quality of life.
And if your dog’s weight or shape is changing without an obvious reason, involve your veterinary team.
A gradual change is much easier to manage when you notice it early.
This guide provides general information about healthy weight and body condition in dogs. It does not diagnose obesity, underweight conditions or the reason for a change in weight. Speak to your veterinary practice if you are unsure about your dog’s body condition, if their weight changes unexpectedly, or before beginning a significant weight-loss or weight-gain programme. Puppies, pregnant dogs, senior dogs and dogs with medical conditions may require individual nutritional advice.
