The Canine Athlete: Nutrition Mindset
Using food to fuel stamina, resilience and performance
We don’t always think of our dogs as athletes. Yet many of them are. In all shapes and sizes, be they gundogs traversing different terrains, sheepdogs following scent trails across miles of fells or agility champions showcasing speedwork on obstacle courses. In science, active dogs are divided into categories: hunting dogs are considered ‘medium activity’ dogs, huskies are endurance dogs, agility dogs are sprinters. Their dietary needs won’t be the same, but they must always be considered carefully – and in the context of their particular activity.
These dogs are made for work and focus: with larger hearts, lean, efficient muscle and sometimes a denser red blood cell count, they don’t just look athletic, they are. Working and sporting dogs are built to perform; their physiological differences also mean they have higher metabolic rates and burn calories faster. Performance and recovery will also depend on nutritional support.
Just as human athletes are careful about what they eat, working dogs will benefit from constant, nutrient-dense diets and functional foods that support their whole system. A healthy gut can affect muscles, joints, immune health and even cognitive and brain function. That’s more than just calories in a bowl.
Going the distance: foodwise
We know that performance isn’t a one‑day thing. You wouldn’t expect a runner to turn up for a marathon once a year without laying the groundwork on the other 364 days. Steady year-round work to build up and maintain stamina is crucial: consistent training combined with a balanced, nutritional diet.
And treats shouldn’t be overlooked. As part of the nutritional equation, they should be functional treats, made with quality, functional ingredients. Treats that are ultra-processed or high in sugar, salt or artificial additives risk undermining the benefits of a well-designed daily diet.
Feeding a high quality diet throughout the year – whether work is seasonal or not – has several benefits:
– helps to maintain overall fitness and condition
– avoids the need for dramatic pre-season dietary changes
– provides energy and the nutrients essential for physical and mental wellbeing
– supports muscle repair and reduces recovery and recuperation time
– maintains lean muscle mass
– reduces the risk of injury during more intense activities
– sharpens cognitive function and mental focus
– avoids metabolic upset from dietary changes.
With that advantage, the dog is not only primed to cope with exertion but also able to recover well and stay sound for the longer term.
Energy and Recovery: Macronutrients
Protein and amino acids: the repair crew
Working dogs require a diet with a higher protein content than typical pet food to support their active lifestyle and muscle maintenance. A good working dog diet should contain at least 25% protein on a dry matter basis, with some suggesting even higher levels for high-intensity work. This is only a guideline, of course. I have seen recommendations of over 30% for endurance work.
Diets that incorporate high-quality protein provide essential amino acids required for maintaining optimal muscle function in working and sporting dogs. The digestibility and diversity of protein sources are significant considerations. Animal-derived proteins are generally more digestible, but plant-based proteins can also be a viable alternative – and sprouting techniques can improve their digestibility.
Studies in both hunting and working dogs found that dogs on higher‑protein diets recover more quickly: one field study showed that dogs fed a ‘performance diet’ exhibited better amino acid profiles after exercise, suggesting their bodies were primed to cope with exertion more effectively. Research also shows that amino acids, particularly the branched-chain amino acids that dogs do not produce themselves, can contribute 5 to 15 percent of the energy used during exercise.
Fats: concentrated fuel
Fat is the prime energy source for dogs. With one gram of fat at 9 calories, and one gram of carbs or protein at 4 calories, fat is obviously the most efficient energy source for dogs. Both endurance and intermediate canine athletes typically derive around 70–90% of their energy from fat metabolism. This figure is supported by research which shows that intermediate athletes such as hunting, agility and service dogs rely on fat for the majority of their energy needs. That is why field dog diets often push fat levels to 18–20% or even higher; it’s not an indulgence.
Fat provides more than twice the energy of protein or carbohydrate gram for gram. Oily fish and flaxseed provide not only calories but also essential omega-3 fatty acids, which help reduce inflammation and support joint and cardiovascular health. While animal fats also contribute energy and omega-6 fatty acids, a balance favouring anti-inflammatory omega-3s is critical in working dogs. (Although there is no prescribed omega-6 to omega-3 ratio for dogs, studies suggest a significantly lower ratio than is found in most commercial diets — ideally in the range of 5:1 to 10:1 — particularly for active dogs, those under chronic physical stress, or those prone to inflammation[1][2].)
Carbohydrates: steady energy release
Although dogs don’t rely heavily on carbohydrate metabolism in the same way as human athletes, they do need glucose. A modest, strategic intake of digestible complex carbs like oats, quinoa or sweet potato can help replenish glycogen stores and aid recovery, especially after extended periods of exertion. These ingredients provide a steady release of energy rather than sharp spikes, supporting stamina over long periods of activity. Digestibility is particularly important as undigested carbs reaching the colon can increase water loss, gas and faecal bulk, adding stress during work.
Balance
Balancing these three macronutrients is key: enough fat and carbohydrate to meet energy needs, leaving protein free for anabolic processes like muscle repair.
Micronutrients Matter
Behind the big three nutrients lie the micronutrients that keep systems ticking over. Calcium and phosphorus support bone strength; potassium and magnesium keep nerves firing and muscles contracting; iron and copper ensure oxygen is delivered where it’s needed. Antioxidant vitamins such as C and E mop up the oxidative stress of exercise, protecting cells from damage.
While dogs do have internal antioxidant systems, these may not fully meet demand during sustained or repeated physical stress. In such cases, dietary sources of antioxidants become critical to reinforce the body’s defences, reduce cellular damage and support long-term performance and recovery.
Field studies suggest that when dogs are fed diets rich in these micronutrients, they show lower markers of muscle damage and bounce back faster from exertion. It’s a reminder that fuelling isn’t just about energy — it’s about protection and repair.
Hydration
A day’s work for an athletic dog can be long and uneven. Hours of waiting may be broken by sudden bursts of effort, or by sustained activity that stretches on for much of the day. Hunting, trialling, herding or fieldwork events can all involve exposure to heat or cold, sometimes with little shelter and limited access to natural water.
In such circumstances, water losses can rise to between ten and twenty times normal levels. Even a mild case of dehydration that isn’t immediately discernible can reduce temperature regulation, strength and performance. When a lack of hydration leads to dry nasal membranes, for example, scenting ability will be impaired – a key concern where dogs are working with their noses.
Offering water in small, frequent amounts keeps fluid balance stable; feeding broths or even dampening treats will encourage reluctant drinkers.
Some dogs also experience looser stools after prolonged exertion – not necessarily a digestive issue, but sometimes a physiological response to the strain of work. Digestive upset or diarrhoea can compound dehydration, especially in warm conditions or over consecutive days.
Timings: before and after work
Timing meals carefully around exertion can also reduce GI upset and help sustain energy. A main meal no less than four hours before work leaves the stomach empty but the body fuelled, while small functional snacks during prolonged effort and a larger meal soon after exercise ensure energy is replenished without overloading digestion.
A post‑work meal rich in protein (to support repair) and some carbohydrate (to restore glycogen) soon after finishing can also accelerate and improve recovery, when the body has a chance to rebuild tissue, replenish energy stores and restore physiological balance.
At the heart of performance nutrition
How to translate this:
– fat as the primary, high‑efficiency energy source
– protein to rebuild muscles after hard work
– complex carbs for sustained effort
– micronutrients to keep bones, nerves and muscles firing
– rehydration and recovery meals
into practical information on the best proteins, fats and other ingredients?
In the second and third articles of this series, we’ll look at the gut in action and functional foods for performance.
References:
[1] Beynen, Anton. (2020). Beynen AC, 2020. Omega 6-3 ratio in dog food.
[2] Dominguez, B., Gobbetti, M., and Centenaro, S. (2023). Dietary intake of polyunsaturated fatty acids (PUFA) regulates prostaglandin production in dogs. Animals (Basel), 13(15), 2426. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10484482/