Why Some Dogs Struggle to Keep Weight On
There is a common assumption in the dog world that if a dog is losing weight or looking lean, the answer is simply to feed more food.
In reality, it is often far more complicated than that.
At The Dog Man’s Choice, we regularly see highly active dogs that are eating well, appear healthy, have excellent appetites, and yet still struggle to maintain ideal body condition.
This is particularly common in:
- working dogs,
- high-drive breeds,
- active spaniels,
- operational dogs,
- and dogs living in constantly stimulated environments.
Not All Calories Are Used Equally
Two dogs can eat exactly the same amount of food and maintain completely different body conditions.
Why High Drive Dogs Burn More Energy
Because dogs do not just burn calories through physical exercise. They also burn energy mentally and emotionally.
Dogs that are constantly scanning the environment, hunting, reacting, problem-solving, training, or operating in high states of arousal often use enormous amounts of energy throughout the day — even when they are resting at home afterwards.
This is something many owners overlook.
A busy-minded dog can sometimes struggle to hold weight despite appearing to eat perfectly well.
Bigger Stools Can Sometimes Tell a Story
One of the first things owners often notice is increased stool volume.
Whilst there can be medical causes that should always be ruled out where appropriate, larger stools can sometimes indicate that a food is simply passing through the digestive system less efficiently for that particular dog.
This does not automatically mean the food is “bad”.
Far from it.
Some foods are designed to be:
- highly digestible,
- lower in fat,
- leaner in composition,
- or suited to sensitive stomachs.
For many dogs, this works brilliantly.
However, highly active or naturally lean dogs may sometimes require a slightly different nutritional balance in order to maintain ideal condition.
Feeding Charts Are Only Guidelines
This is one of the biggest misunderstandings in dog nutrition.
Feeding guides printed on bags are averages.
They do not account for:
- lifestyle,
- breed type,
- training levels,
- environmental stress,
- metabolism,
- working roles,
- or individual temperament.
A relaxed pet Labrador sleeping most of the day will not have the same nutritional demands as a high-drive working cocker spaniel constantly operating in a heightened state of engagement.
Even if they weigh the same.
Looking at the Dog in Front of You
At THE DOG MAN®, we always encourage owners to assess:
- overall body condition,
- recovery levels,
- coat quality,
- stool consistency,
- energy levels,
- and long-term stability,
rather than becoming overly focused on numbers alone.
Some naturally athletic dogs will always carry a leaner physique than others, and that is perfectly normal.
The goal is not excessive weight.
The goal is:
- healthy condition,
- stable digestion,
- good recovery,
- and sustainable energy levels.
Every Dog Is an Individual
Modern dog nutrition has improved enormously over the years, but there is still no single food that suits every dog equally.
Breed type, lifestyle, genetics, drive levels, and environmental pressures all influence how efficiently a dog utilises its food.
Sometimes small adjustments to feeding strategy, food selection, or calorie balance can make a significant difference over time.
The key is consistency, observation, and resisting the temptation to constantly change diets without giving the dog time to adapt properly.
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THE DOG MAN® Top Trainer Tip
“Feed the dog in front of you — not just the chart on the bag.”
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Craig Flint
Veteran Operational K9 Specialist
FdSc (Applied Canine Behaviour & Training)
THE DOG MAN®
