How many grams of protein should my dog eat per day?

Direct answer: there is no single grams-per-day target that fits every dog.

Daily protein depends on two linked numbers:

1. how many calories the dog actually eats; and
2. how many grams of protein the food supplies per 1,000 kcal.

For a healthy adult dog eating 900 kcal/day, the published references translate to approximately:

• 23 g/day at the NRC adult recommended allowance of about 25 g/1,000 kcal;
• 41 g/day at the AAFCO adult commercial-food minimum of 45 g/1,000 kcal; and
• 47 g/day at FEDIAF’s 52.1 g/1,000 kcal adult column for dogs eating at the lower energy assumption of 95 kcal/kg^0.75.

Those numbers describe different things. The NRC value is a physiologic allowance developed under high-quality, highly digestible-protein assumptions. AAFCO and FEDIAF values are commercial complete-food formulation references. None is a proven optimal protein intake for longevity.

Nara is a canine health and longevity platform. Our interpretation is to calculate the actual ration first, then compare it with the appropriate reference for the dog’s life stage and feeding context. Do not choose one universal gram number from body weight alone.

Evidence confidence: Moderate.

Confidence is high in the conversion method and the published nutrient references. Confidence is much lower in any claim that one protein intake is optimal for every healthy dog, or that a label-based crude-protein calculation establishes amino-acid adequacy.

The three protein numbers owners should keep separate

The first layer asks what is physiologically required under defined assumptions. The second asks how commercial complete foods are formulated. The third asks what reaches this dog’s bowl.

That third number is the one owners need to calculate.

The calculation

Use the food’s guaranteed crude-protein percentage and kcal/kg whenever both are available.

1. Protein density of the food

Protein density floor (g/1,000 kcal) = guaranteed protein % × 10,000 ÷ kcal/kg

A food containing 28% crude protein and 3,600 kcal/kg has a guaranteed protein-density floor of:

28 × 10,000 ÷ 3,600 = 77.8 g/1,000 kcal

2. Daily protein from the ration

You can calculate this in either of two equivalent ways:

Daily protein floor = grams of food fed × guaranteed protein % ÷ 100

or:

Daily protein floor = protein density × daily food calories ÷ 1,000

If that 28% food is fed at 180 g/day, the guaranteed minimum supplies:

180 × 28 ÷ 100 = 50.4 g crude protein/day

3. Per-cup calculation, when a cup weight is available

Protein grams per cup = cup weight in grams × guaranteed protein % ÷ 100

A 100 g cup of a 28% food contains at least 28 g crude protein. A cup is not a reliable unit unless its gram weight is known. Weighing the ration is more dependable than relying on cup volume.

Why the same protein percentage can produce different daily grams

Crude-protein percentage tells you grams of protein per 100 g of food. It does not tell you how much protein the dog receives per calorie.

Consider two hypothetical foods that both guarantee 28% crude protein:

The protein percentage is identical. The more calorie-dense food supplies less protein per calorie, so a dog eating the same calories receives fewer protein grams.

That is why a bag’s percentage should never be interpreted without its calorie density and the measured amount fed.

Published adult and growth references

Healthy adult dogs

The NRC adult recommended allowance is about 25 g crude protein per 1,000 kcal, with a minimum requirement around 20 g/1,000 kcal. These values assume high-quality, highly digestible protein and are not commercial-kibble formulation targets.

AAFCO’s adult maintenance profile contains 45.0 g crude protein per 1,000 kcal.

FEDIAF 2025 publishes two adult commercial-food columns:

• 45.0 g/1,000 kcal for an adult eating at an assumed MER of 110 kcal/kg^0.75; and
• 52.1 g/1,000 kcal for an adult eating at an assumed MER of 95 kcal/kg^0.75.

FEDIAF states that these are minimum recommended levels for commercial pet food, not minimum biologic requirements or optimal intakes. Its adult protein recommendation also accounts for an assumed 80% apparent protein digestibility, lower energy intakes in household dogs, and the requirements of older dogs.

Puppies and reproduction

Growth is not one protein number.

• AAFCO growth and reproduction: 56.3 g/1,000 kcal.
• FEDIAF 2025 early growth under 14 weeks and reproduction: 62.5 g/1,000 kcal.
• FEDIAF 2025 late growth at or after 14 weeks: 50.0 g/1,000 kcal.

Daily grams can still be high because growing puppies and lactating dogs often eat much more energy than adult maintenance dogs. Puppy feeding also requires appropriate energy, calcium, phosphorus, and growth-rate control. Protein should not be increased by simply overfeeding the food.

A daily-gram table

The table below shows how the same reference becomes a different daily gram amount at different calorie intakes.

This is why body weight alone cannot produce a reliable protein answer. Daily grams depend on the dog’s actual energy intake, and energy needs vary substantially between individuals.

What happens when calories are reduced

When the portion is cut, the food’s protein percentage does not change, but daily protein grams fall with the amount of food.

For example, a food providing 45 g/1,000 kcal supplies:

• about 41 g/day at 900 kcal; but
• only 27 g/day at 600 kcal.

To hold 41 g/day at 600 kcal, the food would need to provide approximately 68 g/1,000 kcal.

Merck’s Veterinary Manual makes the practical point directly: feeding a maintenance diet at a restricted amount reduces the intake of every nutrient, and maintenance diets are not formulated for severe restriction. When a dog needs materially less food than the package suggests to maintain an appropriate weight and BCS, a less energy-dense, nutrient-adjusted weight-management diet may be a better fit than simply cutting the usual food.

Direct canine evidence supports the concern, while also showing why protein is not the whole answer:

• In a 2015 cohort of 27 obese dogs fed a purpose-formulated high-protein, high-fibre weight-loss diet for at least 182 days, mean intake was about 61 kcal/kg^0.75/day. Most essential nutrient intakes remained above NRC recommended allowances and no clinical deficiency signs were observed, but selenium, choline, sulfur amino acids, tryptophan, magnesium, and potassium fell below recommended allowances in at least some dogs.
• A 2013 study of 31 dogs undergoing restriction found decreases in plasma choline and threonine. The clinical significance was uncertain.
• A 2025 meta-analysis by Vanelli and colleagues included 20 canine hypocaloric studies. Diets above 25% protein on a dry-matter basis were associated with better weight-loss and lean-mass outcomes, but protein was entangled with fibre, fat, carbohydrate, and energy density. At a reference density of 4,000 kcal/kg dry matter, 25% dry matter corresponds to about 62.5 g/1,000 kcal. That conversion is illustrative, not a universal prescription.
• In a small 2017 study of 14 young, lean dogs after neutering, diets supplying 59.7 versus 94.0 g/1,000 kcal were compared while body weight was held stable. The higher-protein diet better preserved maintenance energy expenditure and body composition. The population was narrow, with seven dogs per arm, and the study was conducted at an industry nutrition centre.

When calories fall, protein density usually needs to stay the same or rise, but crude-protein math cannot confirm total nutrient adequacy.

A purpose-formulated weight-loss diet is the more defensible way to preserve nutrient intake during substantial restriction. There is no well-validated universal canine weight-loss target such as one fixed number of protein grams per kilogram of body weight.

What aging changes

Healthy senior dogs do not have a separate AAFCO or NRC protein profile. That does not mean aging is nutritionally irrelevant.

Merck notes that adult maintenance is not one uniform life stage and that metabolic and physiologic changes can make young-adult, mature-adult, and geriatric dogs nutritionally different. FEDIAF’s adult protein recommendations already incorporate older-dog data rather than creating a separate senior table.

The 2001 Williams study used 36 female Beagles, averaging about 2 or 8 years old, fed diets containing 16%, 24%, or 32% protein. Nitrogen balance was similar across groups, while whole-body nitrogen flux increased as protein intake increased. The study supports a narrow conclusion: more protein was not required to maintain nitrogen balance in that controlled design. It does not prove that 16% is optimal for preserving muscle in every older dog.

The NRC owner guide states that older dogs may require somewhat more protein, perhaps as much as 50% more, to maintain protein reserves. It also notes that older dogs often need fewer calories. Those two directions create the practical concern: even if the absolute protein requirement changes little, a lower calorie intake can require more protein per calorie to prevent daily grams from collapsing.

For a senior dog, the useful checks are therefore:

1. total calories;
2. protein density and daily protein grams;
3. body weight and BCS; and
4. muscle condition over time.

There is no validated universal senior gram target. A “senior” label alone does not prove that a food has more protein per calorie.

Important exceptions

Kidney disease and other therapeutic diets

Do not apply healthy-adult protein references to a dog with chronic kidney disease, hepatic encephalopathy, or another condition requiring a therapeutic diet. IRIS treatment recommendations center staged clinical management and veterinary renal diets. This guide does not derive an owner-facing protein grams-per-day target from those clinical recommendations; an individualized veterinary plan takes priority.

Highly active and working dogs

High-energy dogs often receive high absolute protein grams simply because they eat much more food. Standard adult tables may not represent endurance or extreme-work contexts. Energy adequacy, hydration, recovery, and the full diet matter alongside protein.

Homemade, raw, and complementary diets

Commercial-food profile values do not prove that a home-prepared ration is balanced. Crude-protein grams cannot establish essential amino-acid balance, digestibility, calcium and phosphorus adequacy, or micronutrient coverage. These diets need recipe-level formulation.

What this evidence cannot tell you

• No robust canine trial defines one optimal gram-per-day or gram-per-kilogram protein target for healthy pet dogs or for longevity.
• Commercial AAFCO and FEDIAF floors are formulation references, not biologic requirements or proven optimal intakes.
• Guaranteed crude protein is a minimum and does not measure digestible essential amino acids.
• Individual energy needs vary widely, so the wrong calorie estimate produces the wrong daily-protein estimate.
• Weight-loss studies evaluate complete diet patterns. Protein, fibre, fat, carbohydrate, energy density, and monitoring are difficult to separate.
• Disease, growth, pregnancy, lactation, and extreme activity can make healthy-adult references inappropriate.

How Nara uses this evidence

Nara treats daily protein as a conversion problem before treating it as an optimization question.

The sequence is:

1. establish a defensible calorie range;
2. measure the actual ration in grams;
3. calculate the food’s protein density and daily crude-protein floor;
4. compare it with the appropriate life-stage reference; and
5. track weight, BCS, muscle condition, and ration changes over time.

Nara keeps three layers separate:

• the NRC physiologic reference;
• the AAFCO or FEDIAF commercial-food reference; and
• the amount this dog is actually eating.

That prevents a commercial formulation minimum from becoming an “optimal” target, while also preventing a bag percentage from being mistaken for daily intake.

The answer in brief

There is no single protein grams-per-day target that fits every dog.

Calculate daily protein by combining the dog’s measured calorie intake with the food’s grams of protein per 1,000 kcal.

For healthy adult dogs, the NRC recommended allowance is about 25 g/1,000 kcal. AAFCO’s adult commercial-food minimum is 45.0 g/1,000 kcal. FEDIAF 2025 publishes adult commercial-food values of 45.0 and 52.1 g/1,000 kcal at different assumed energy intakes.

At 900 kcal/day, those references correspond to about 23, 41, and 47 g/day.

When calories are reduced, daily protein grams fall unless protein density rises. Purpose-formulated weight-loss diets are designed to preserve more complete nutrient intake at a lower calorie allowance. Crude-protein math alone cannot confirm amino-acid or micronutrient adequacy.

Nara uses these values as physiologic and commercial screening references, not as one proven optimal protein target.

Sources

1. National Research Council. Nutrient Requirements of Dogs and Cats. Washington, DC: National Academies Press; 2006.
   https://www.nationalacademies.org/publications/10668
2. National Research Council. Your Dog’s Nutritional Needs: A Science-Based Guide for Pet Owners. 2006.
   https://nap.nationalacademies.org/resource/10668/dog_nutrition_final_fix.pdf
3. Association of American Feed Control Officials. Appendix A: AAFCO Methods for Substantiating Nutritional Adequacy of Dog and Cat Foods; Revised AAFCO Dog and Cat Food Nutrient Profiles. 2014.
   https://www.aafco.org/wp-content/uploads/2023/01/Pet_Food_Report_Annual_2014-Appendix_A-Revised_AAFCO_Nutrient_Profiles-Final_092214.pdf
4. FEDIAF. Nutritional Guidelines for Complete and Complementary Pet Food for Cats and Dogs. September 2025.
   https://europeanpetfood.org/wp-content/uploads/2025/09/FEDIAF-Nutritional-Guidelines_2025-ONLINE.pdf
5. Merck Veterinary Manual. Nutritional Requirements of Small Animals.
   https://www.merckvetmanual.com/management-and-nutrition/nutrition-small-animals/nutritional-requirements-of-small-animals
6. Williams CC, Cummins KA, Hayek MG, Davenport GM. Effects of dietary protein on whole-body protein turnover and endocrine function in young-adult and aging dogs. J Anim Sci. 2001;79(12):3128–3136.
   https://doi.org/10.2527/2001.79123128x
7. Kawauchi IM, Jeremias JT, Takeara P, et al. Effect of dietary protein intake on the body composition and metabolic parameters of neutered dogs. J Nutr Sci. 2017;6:e40.
   https://pmc.ncbi.nlm.nih.gov/articles/PMC5672309/
8. Vanelli K, Wisneski RF, Estevão C, et al. Impact of hypocaloric diets on weight loss and body composition in obese dogs: a meta-analysis. Animals. 2025;15(2):210.
   https://doi.org/10.3390/ani15020210
9. German AJ, Holden SL, Serisier S, Queau Y, Biourge V. Assessing the adequacy of essential nutrient intake in obese dogs undergoing energy restriction for weight loss: a cohort study. BMC Vet Res. 2015;11:253.
   https://doi.org/10.1186/s12917-015-0570-y
10. Linder DE, Freeman LM, Holden SL, Biourge V, German AJ. Status of selected nutrients in obese dogs undergoing caloric restriction. BMC Vet Res. 2013;9:219.
    https://doi.org/10.1186/1746-6148-9-219
11. Linder DE, Freeman LM, Morris P, et al. Theoretical evaluation of risk for nutritional deficiency with caloric restriction in dogs. Vet Q. 2012;32(3–4):123–129.
    https://doi.org/10.1080/01652176.2012.733079
12. Gaylord L, Remillard R, Saker K. Risk of nutritional deficiencies for dogs on a weight loss plan. J Small Anim Pract. 2018;59(11):695–703.
    https://doi.org/10.1111/jsap.12913
13. International Renal Interest Society. IRIS Guidelines.
    https://www.iris-kidney.com/iris-guidelines-1

Funding and authorship context

Several studies in this field include pet-food-industry funding, industry-employed authors, or manufacturer-supplied diets. FEDIAF is an industry federation. Nara retains directly relevant evidence while treating funding, authorship, population, and study design as part of the interpretation.

Related questions

• Does my dog’s food meet their calorie and protein needs?
• How many calories should my dog eat each day?
• Does a senior dog need more protein than an adult dog?
• Can reducing my dog’s food for weight loss create nutrient shortfalls?
• What protein density should a puppy food have?
• Should a dog with kidney disease eat less protein?