The number-one cause of obesity in dogs is simply eating too much. Most owners are overfeeding by 20–30% — often unintentionally. This guide gives you the real numbers for your dog's size and age.
Daily Feeding Amounts by Weight
These are general guidelines for adult dogs eating standard-quality dry kibble (~350–400 kcal/cup). Always check the specific calorie count on your food's bag.
| Dog Weight | Cups per Day (sedentary) | Cups per Day (active) |
|---|---|---|
| 5–10 lbs (toy breeds) | ¼ – ½ cup | ½ – ¾ cup |
| 10–20 lbs (small breeds) | ¾ – 1 cup | 1 – 1⅓ cups |
| 20–40 lbs (medium breeds) | 1½ – 2 cups | 2 – 2½ cups |
| 40–60 lbs (medium-large) | 2 – 2½ cups | 2½ – 3 cups |
| 60–80 lbs (large breeds) | 2½ – 3 cups | 3 – 3½ cups |
| 80–100 lbs (giant breeds) | 3 – 4 cups | 4 – 4½ cups |
| 100+ lbs | 4 – 5 cups | 5 – 6 cups |
Meals vs. Free Feeding
Scheduled meals (2x/day for adults, 3x/day for puppies) are strongly preferred by vets. Benefits: helps with weight control, lets you notice appetite changes (an early illness sign), and reduces bloat risk in large breeds. Feed at consistent times each day.
Free feeding (food available all day) works for some dogs who self-regulate, but most dogs will overeat. It also makes it impossible to track intake or notice when a dog stops eating. Not recommended for multi-dog households.
Measuring Correctly
Most "scoops" are not standard measuring cups. Always use a proper dry measuring cup or kitchen scale. Weigh your dog monthly and adjust portions accordingly.
- Check the calorie density on your food's bag (kcal/cup or kcal/kg)
- Calculate your dog's Resting Energy Requirement (RER): RER = 70 × (body weight in kg)^0.75
- Multiply by 1.6 for sedentary adults, 2.0 for active adults, 1.2 for obese-prone dogs
- Divide total kcal needed by kcal/cup to get daily cup amount
- Split into 2 meals; weigh dog monthly and adjust by ¼ cup if needed
If math isn't your thing: use an online dog calorie calculator (many vet school websites offer free ones), then work backward to cups.
Signs You're Over or Under Feeding
| Check | Ideal | Overweight Sign | Underweight Sign |
|---|---|---|---|
| Ribs | Felt easily, not visible | Hard to feel under fat layer | Visible from a distance |
| Waist | Visible tuck behind ribs from above | No waist — looks like sausage | Extreme hourglass |
| Spine | Felt but not prominent | Buried under fat | Visible bumps from a distance |
| Energy | Playful, engaged | Reluctant to exercise, tired | Low energy, dull coat |
Counting Treats in the Total
Treats should account for no more than 10% of daily caloric intake. Most treats run 3–10 kcal each. If you give 10 treats a day (50–100 kcal), that's enough to cause 1 lb of weight gain per month in a small dog.
Training-heavy days? Use kibble from the daily ration as treats. Use low-calorie treats: baby carrots, cucumber slices, blueberries. They work just as well as commercial treats for training.