Best Dog Food for Working & Sporting Dogs (UK)

At a glance

• Working and sporting dogs need 1,700 to 2,200+ calories a day, roughly 1.5 to 3 times more than a moderately active pet dog of the same size.
• Diets for working dogs should provide at least 25 to 30% protein and 15 to 20% fat on a dry matter basis, higher than standard adult maintenance food.
• Fat is the primary fuel source for endurance work; protein supports muscle repair and recovery after exertion.
• Timing matters: dogs should not eat a large meal within 2 hours before or immediately after intense exercise, to reduce the risk of bloat.
• FEDIAF (the European pet food federation) sets nutrient guidelines that reputable UK dog foods, including Marleybones, are formulated to meet.

What should you feed a working or sporting dog?

Working and sporting dogs need food that's calorie-dense, high in quality protein and fat, and easy to digest quickly. Gundogs, sheepdogs, agility dogs, and other genuinely active breeds burn through energy reserves far faster than the average pet dog, and their diet has to keep pace with that output.

A springer spaniel working a shoot day, a collie herding for hours, or a dog competing in agility all have very different energy demands to a dog on two 20-minute walks a day. The mistake most owners make is feeding a standard adult maintenance food and wondering why their dog looks lean, tired, or struggles to recover between sessions. Working dogs typically need diets built around higher protein and fat percentages than a general life stages formula, alongside the kind of balanced approach covered in this guide to feeding dogs at every life stage.

How many calories does a working dog actually need?

A genuinely active working dog needs between 1,700 and 2,200+ calories a day, depending on size, breed, and workload intensity. A 25kg sedentary pet dog might need around 900 to 1,000 calories daily. A 25kg dog doing several hours of intense field work or herding can need double that, sometimes more during peak season.

These figures are guidelines, not fixed rules. Body condition is the real test: you should be able to feel a working dog's ribs easily under a thin layer of fat, with a visible waist from above. Adjust portions up or down based on how the dog looks and performs, not just a number on a bag.

What nutrients matter most for working and sporting dogs?

Fat and protein are the two nutrients that matter most, because they fuel different types of work. Fat is the primary energy source for endurance and sustained activity, burning slowly over hours. Protein rebuilds and repairs muscle tissue after exertion, which is why recovery quality depends heavily on protein amount and quality, not just quantity.

Working dog diets generally need at least 25 to 30% protein and 15 to 20% fat on a dry matter basis (this measures nutrients with the water content removed, so foods can be compared fairly). Sprint-type activity, like short bursts of agility or flyball, relies more on quick-access carbohydrate and protein. Sustained endurance work, like a full day's shoot or long-distance herding, relies more heavily on fat as fuel.

• Protein: supports muscle repair, coat condition, and immune function during high-output periods
• Fat: primary fuel for sustained activity, also supports joint lubrication and energy density
• Omega-3 fatty acids: help manage inflammation from repetitive joint and muscle stress
• Digestible carbohydrates: provide readily available glucose for quick bursts of energy

Ingredient quality determines how much of this actually gets used. A food listing meat as the first ingredient in specific terms, rather than vague