How Much Protein Does a Dog Actually Need?
At a glance
- Adult dogs need a minimum of 18% crude protein on a dry matter basis — puppies need at least 22%
- Active and working dogs need more; senior dogs generally need similar amounts, not less
- Quality matters as much as quantity — digestibility determines how much protein the body actually uses
- Animal protein provides a complete amino acid profile that plant protein alone cannot match
- Protein deficiency has real consequences: muscle loss, poor coat condition, and a weakened immune system
So how much protein does a dog actually need?
Adult dogs need a minimum of 18% crude protein on a dry matter basis — this is the FEDIAF and AAFCO baseline for complete dog food. Dry matter basis means the protein percentage calculated after all moisture is removed, which gives a fair comparison across wet food, dry kibble, and everything in between.
Puppies need more: the minimum rises to 22% on a dry matter basis, because they are building muscle, bone, and organs simultaneously. Get it wrong at this stage and the consequences follow them into adulthood.
These are minimums, not targets. Many dogs do better with more. A healthy adult dog eating a quality fresh food diet with 28-35% protein on a dry matter basis is well within safe, beneficial range. The kidneys only struggle with very high protein intake if there is already underlying kidney disease — for healthy dogs, excess protein is simply excreted or used for energy.
What the percentage on the label does not tell you is how digestible that protein is. That matters enormously, and it is where most of the real variation between dog foods sits — understanding what sits behind the numbers on a dog food label is the only way to compare products fairly.
Does it matter where the protein comes from?
Yes — significantly. Protein is made up of amino acids, and dogs need 22 of them. They can produce 12 themselves. The remaining 10 are called essential amino acids, meaning the dog cannot make them and must get them from food.
Animal protein — meat, fish, eggs — provides all 10 essential amino acids in the right proportions. Plant protein sources like peas and lentils often fall short on one or more, which is why a dog food relying heavily on plant protein needs careful formulation to avoid deficiencies.
Digestibility is the other half of the equation. A chicken breast and a low-grade meat meal might both register as "protein" on a label, but the proportion the body can actually absorb and use is very different. The same protein percentage can mean very different things depending on what the meat content declaration actually covers — something worth checking before you trust a number on a pack.
Marleybones recipes are built around named animal protein — beef, chicken, lamb, salmon — cooked gently inside the pack to retain nutrients without the high-heat processing that degrades protein digestibility in standard kibble. Each recipe is FEDIAF compliant, meaning the amino acid profile meets the full nutritional standard for every life stage including puppies.
Do some dogs need more protein than others?
Absolutely. Life stage and lifestyle both shift the requirement considerably.
Puppies need higher protein across the board. Their bodies are building everything from scratch. Getting the portions and nutritional balance right during puppyhood has a direct impact on how they develop.
Working and highly active dogs — think Border Collies, Belgian Malinois, and similar breeds doing real physical work — need protein well above the minimum. Their muscles are under consistent stress and need the amino acids to repair and strengthen between sessions. A working dog eating the bare minimum is running on empty nutritionally.
Senior dogs are often under-proteined on the assumption that older dogs need less. The evidence says the opposite: older dogs are less efficient at processing and absorbing protein, which means they often need the same amount, or more, to maintain muscle mass. Muscle loss in older dogs — sarcopenia — is a real and underappreciated problem. Feeding an older dog correctly means resisting the urge to reduce protein without a specific medical reason to do so.
Dogs with kidney disease are the exception. For these dogs, your vet should determine protein levels. This is one situation where restriction is genuinely appropriate, and it needs to be managed carefully.
What happens if a dog does not get enough protein?
Protein deficiency is not dramatic at first — it creeps in. The early signs are a dull, dry coat, slower recovery after exercise, and slightly reduced energy. Left unaddressed, the body starts breaking down muscle to free up the amino acids it needs, which accelerates the very muscle loss you want to prevent in older dogs.
Immune function also suffers. Antibodies are proteins. A dog chronically short on dietary protein produces fewer of them, which makes the immune response slower and less effective.
The coat is often the most visible signal. Different meat proteins bring different amino acid profiles, and some are richer in the specific ones that support skin and coat health — cysteine and methionine in particular. Rotating proteins or choosing a food with a high-quality primary meat source makes a difference here.
Marleybones Sassy Salmon is a good example: salmon is naturally rich in both protein and omega-3 fatty acids, which work together to support coat condition and reduce inflammation. If your dog has a dull coat alongside other signs of dietary insufficiency, the food itself is the first place to look.
Every dog is different — build your personalised Marleybones feeding and health plan tailored to your dog's age, size, and health requirements.
“Such a relief to see her enjoying her food”
FAQs
How much protein should be in dog food?
Adult dog food should contain at least 18% crude protein on a dry matter basis, and puppy food at least 22%. Many quality dog foods sit higher than this, which is fine for healthy dogs. The source and digestibility of that protein matters as much as the percentage.
Is too much protein bad for dogs?
For healthy dogs, no. Excess protein is either used for energy or excreted. The concern about protein damaging kidneys applies only to dogs with pre-existing kidney disease, where a vet should determine appropriate protein levels.
Do senior dogs need less protein?
No — and this is one of the most common feeding mistakes. Older dogs are less efficient at absorbing protein, so they need at least as much as adult dogs, often more, to maintain muscle mass. Cutting protein in a senior dog without a specific medical reason accelerates muscle loss.
Is plant protein good enough for dogs?
Plant protein can contribute to overall intake, but it does not provide a complete essential amino acid profile on its own. Dogs do best with animal protein as the primary source. Foods leaning heavily on peas, lentils, or soy as main protein contributors need very careful formulation to meet nutritional standards.
How do I know if my dog is getting enough protein?
The clearest signs are a full, glossy coat, healthy muscle tone, consistent energy, and a lean body condition. A dull coat, muscle loss, or poor recovery after exercise can all point to inadequate protein intake. If you are unsure, a vet or veterinary nutritionist can assess your dog's body condition and diet.
“A complete game changer!!”
Give your dog the quality nutrition they deserve
Real meat, wholesome veggies and functional superfoods.
Get 40% OFF today
