What makes a dog food 'for working dogs' different from a normal adult food?

Mainly the fat and protein levels. A working formula usually runs higher in both — often 18-24% fat and 26-30% protein against a standard adult food's lower figures — because a dog doing real physical work needs more energy and more for muscle repair than a dog on ordinary walks.

Can I feed a working dog food to a dog that only does normal walks?

You can, but there's usually no benefit and it can lead to a dog carrying more weight than it needs, since the extra calories have nowhere to go. Working formulas are built for genuine physical workload, not for an active pet doing regular walks.

Do working dogs need a grain-free food?

Not automatically. Grain-free is about avoiding wheat or maize, usually for a dog with a known sensitivity, and it's a separate question from energy density. A working dog with no digestive issues gains nothing from grain-free specifically — the figures to check are fat and protein.

How much dry food does a working dog need?

It varies enormously with the dog, the work and the season, which is why every bag carries a feeding guide by weight as a starting point. Feed to condition rather than a fixed number, increase gradually as workload rises, and speak to your vet if weight or coat condition isn't settling.

Is a higher-protein food harder on an older working dog's kidneys?

For a healthy dog with no existing kidney problems, there's no established reason to avoid a higher-protein diet. A dog with diagnosed kidney disease is a different situation entirely and needs a diet chosen with your vet, not from a general guide like this one.

Dry dog food for working dogs

A working dog — a farm collie, a gundog out three or four days a week in season, a dog covering real ground rather than a lead walk round the block — needs food built around a higher energy density than a standard adult recipe. That mostly comes down to two numbers on the bag: the fat percentage and the protein percentage, both of which run higher in a working formula than in an everyday complete food.

What 'working dog' means on a bag

There's no legal definition of a working dog food the way there is for puppy or senior formulas, so it's a marketing term rather than a regulated category. In practice it almost always means a recipe with a higher fat content, usually somewhere around 18-24%, against the 12-16% typical of a standard adult dry food, because fat is the most calorie-dense part of the diet and the easiest way to pack in energy without a dog having to eat an unreasonable volume of biscuit.

Protein tends to run higher too, often 26-30%, because muscle repair after a hard day's work needs more of it than gentle exercise does. The working ranges we stock, including Field & Trial and Red Mills Xcel, are built around that combination rather than around a single flagship ingredient, which is the giveaway that a bag is genuinely aimed at a dog doing physical work rather than just wearing the word on the packaging.

Energy density and what to check on the label

The figure worth comparing between bags is the metabolisable energy, usually given in kcal per 100g, if it's printed — not every brand shows it, but where it is, a working food will typically sit noticeably above an everyday adult recipe. A dog covering several miles of rough ground a day needs more calories from less volume than a dog on lead walks, and a denser food is how that's managed without simply doubling the bowl size.

Look past the front-of-bag claims to the ingredients list and the guaranteed analysis panel on the back. A genuinely working-grade recipe lists a named meat or meat meal high up the list and shows the fat and protein percentages clearly — if a bag says 'energy' or 'active' on the front but the analysis reads like a standard adult food, it's priced for the claim rather than built for the job.

Grain-free isn't the same question as working-grade

Some working ranges are grain-free and some aren't, and the two things are separate decisions. Grain-free recipes, like Autarky's Tasty White Fish & Potato, use potato or pea starch instead of wheat or maize, which suits a dog with a known sensitivity, but it doesn't automatically mean higher energy — check the fat and protein figures rather than assuming grain-free equals working-grade.

A dog with no known sensitivity gains nothing from paying more for a grain-free bag. The decision that actually matters for a working dog is the energy density and protein level, not whether the starch source is wheat, rice or potato — that's a separate conversation for a dog with digestive issues, not a working-fitness one.

How much to feed

Every bag carries a feeding guide on the back, usually broken down by bodyweight and activity level, and it's the right starting point rather than a fixed rule. A working dog in full season eating outdoors in cold weather often needs meaningfully more than the guide's baseline figure, and the same dog resting between seasons needs less — feed to condition, checking your dog can be felt but not seen, and adjust gradually as the season changes.

If you're increasing the amount fed because of a step up in work, do it over a week or two rather than all at once, the same as introducing any new food. A dog whose weight or coat condition doesn't settle on the guide's figures, in either direction, is worth a chat with your vet rather than guessing further changes yourself.

What we stock

Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.

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MPS Head Cover — Breathable Dog Head & Ear Protector

A comfortable, breathable alternative to the cone of shame — protects head and ear wounds or bandages while letting your dog move freely.

From£30.99

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AniWrap Cohesive Bandages for Dogs & Cats

Stretchy, self-adhesive cohesive bandages that stick to themselves — not to fur — so removal is completely pain-free.

From£4.99

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Common questions

What makes a dog food 'for working dogs' different from a normal adult food?: Mainly the fat and protein levels. A working formula usually runs higher in both — often 18-24% fat and 26-30% protein against a standard adult food's lower figures — because a dog doing real physical work needs more energy and more for muscle repair than a dog on ordinary walks.
Can I feed a working dog food to a dog that only does normal walks?: You can, but there's usually no benefit and it can lead to a dog carrying more weight than it needs, since the extra calories have nowhere to go. Working formulas are built for genuine physical workload, not for an active pet doing regular walks.
Do working dogs need a grain-free food?: Not automatically. Grain-free is about avoiding wheat or maize, usually for a dog with a known sensitivity, and it's a separate question from energy density. A working dog with no digestive issues gains nothing from grain-free specifically — the figures to check are fat and protein.
How much dry food does a working dog need?: It varies enormously with the dog, the work and the season, which is why every bag carries a feeding guide by weight as a starting point. Feed to condition rather than a fixed number, increase gradually as workload rises, and speak to your vet if weight or coat condition isn't settling.
Is a higher-protein food harder on an older working dog's kidneys?: For a healthy dog with no existing kidney problems, there's no established reason to avoid a higher-protein diet. A dog with diagnosed kidney disease is a different situation entirely and needs a diet chosen with your vet, not from a general guide like this one.

Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.