Most dogs eating a natural, whole-food diet need roughly 2% to 3% of their body weight in food per day. A 50-pound dog, for example, would eat about 1 to 1.5 pounds of food daily. But that range is just a starting point. The actual amount depends on your dog’s age, activity level, metabolism, and the calorie density of the ingredients you’re using.
Calculating Your Dog’s Daily Calories
The most precise way to figure out how much to feed is to calculate your dog’s resting energy requirement, or RER. This is the number of calories needed just to keep basic body functions running: breathing, digestion, circulation, brain activity. The formula is 70 multiplied by your dog’s body weight in kilograms raised to the ¾ power. For a 22-pound (10 kg) dog, that works out to about 400 calories per day at rest.
From there, you multiply by an activity factor to get the real daily total. These multipliers account for how much your dog actually moves:
- Indoor or inactive dogs: multiply RER by 1.2
- Low activity: multiply by 1.4
- Moderate activity: multiply by 1.6
- Very active or working dogs: multiply by 2.0
So that same 22-pound dog with moderate activity needs about 640 calories per day (400 × 1.6), while a working dog of the same size might need 800. The gap between a couch potato and a high-energy working dog is significant, which is why body-weight percentages alone can be misleading.
How Much Food That Translates To
Natural diets made from raw or lightly cooked meat, organs, and vegetables typically run between 30 and 60 calories per ounce, depending on the fat content of the protein. Lean chicken breast sits at the lower end; fattier cuts of beef or lamb sit higher. This means the same calorie target could be 12 ounces of lean food or 8 ounces of fattier food.
The common guideline of 2% to 3% of body weight works well as a rough filter. Start at 2.5%, weigh your dog weekly, and adjust. If your dog is losing weight, bump up to 3%. If they’re gaining, drop closer to 2%. Puppies in active growth phases often need 5% to 8% of their body weight because their calorie demands are dramatically higher relative to their size.
What Should Be in the Bowl
Getting the amount right matters less if the balance of ingredients is off. A widely used framework for raw or natural feeding breaks the diet into these proportions: 70% muscle meat, 10% raw edible bone, 5% liver, 5% other organ meat (like kidney), 7% vegetables, 2% seeds or nuts, and 1% fruit.
Liver is the single most important organ to include because it supplies fat-soluble vitamin A along with several B vitamins. Kidney and other secreting organs fill in essential minerals. Together, organ meats should make up about 10% of the total diet, with liver accounting for half of that. Skipping organs entirely is one of the most common mistakes in homemade feeding and leads to nutritional gaps that can take months to show symptoms.
On the macronutrient level, dogs need a minimum of 18% protein on a dry-matter basis for adult maintenance, and shouldn’t exceed about 30%. Fat minimums sit around 5.5% for adults. Carbohydrates have no specific requirement for dogs, but vegetables and small amounts of fruit provide fiber, antioxidants, and micronutrients that support digestion and overall health.
Getting Calcium and Phosphorus Right
One nutrient balance that’s easy to get wrong in homemade diets is calcium to phosphorus. Meat is naturally high in phosphorus but low in calcium, so a diet based on muscle meat alone will be severely imbalanced. The target ratio is about 1.4 parts calcium to 1 part phosphorus. Raw edible bone (like chicken necks or turkey necks) is the most common whole-food source of calcium and the reason most raw feeding frameworks include 10% bone. If you’re feeding cooked food and can’t include bone safely, a calcium supplement ground from eggshell or bone meal is necessary to hit that ratio. Getting this wrong over time affects skeletal health, particularly in growing puppies and large breeds.
Adjustments for Senior Dogs
As dogs age, their metabolism slows and their daily energy needs typically drop by 12% to 13%. For a dog that was eating 800 calories a day in middle age, that’s roughly 100 fewer calories needed in their senior years. Rather than just cutting portion size across the board, many owners reduce the fat content slightly while keeping protein levels steady, since older dogs still need amino acids to maintain muscle mass. You may also notice senior dogs do better with two or three smaller meals rather than one large one, as their digestion becomes less efficient.
Splitting Meals Through the Day
Most adult dogs do well with two meals per day, roughly 12 hours apart. Puppies under six months benefit from three meals. Very large or deep-chested breeds are often fed two or three smaller meals to reduce the risk of bloat. There’s no nutritional advantage to feeding once daily, and splitting the total amount into two servings keeps blood sugar more stable and reduces the chance of your dog gulping a massive portion and vomiting it back up.
How to Transition From Kibble
Switching to natural food cold turkey often causes digestive upset, loose stools, or vomiting. A gradual transition over about 10 days gives your dog’s gut bacteria time to adjust. Start with 25% natural food mixed with 75% of the old diet for the first three days. Move to a 50/50 split for days four through six, then 75% natural food for days seven through nine. By day 10, you should be feeding 100% natural food. If your dog develops persistent diarrhea at any stage, hold at that ratio for a few extra days before increasing again.
During the transition, stools may look different than what you’re used to. Dogs on raw diets typically produce smaller, firmer stools because they’re absorbing more of the food and there’s less filler passing through. This is normal and usually a sign the diet is being digested well.
Signs You’re Feeding the Right Amount
The best indicator is your dog’s body condition, not the number on the scale alone. You should be able to feel your dog’s ribs with light pressure but not see them prominently. When viewed from above, there should be a visible waist tucking in behind the ribcage. From the side, the belly should tuck upward rather than hanging level with the chest.
Weigh your dog every week or two during the first couple of months on a new diet and adjust portions in small increments, around 10% at a time. Energy level, coat quality, and stool consistency are all useful signals. A dull coat or low energy after several weeks may point to insufficient fat or calories. Consistently soft stools could mean too much fat or organ meat relative to muscle meat and bone. Small adjustments based on what you observe will get you to the right amount faster than any formula alone.