The maths, with your numbers
No guesswork and no brand chart. This is the same calculation a vet does on paper, so you can check it.
What this means for the bowl
Diamond Naturals Adult Dog Lamb Meal & Rice is one of the more calorie-dense dry dog foods we track: at 403 kcal per cup it has more energy than 67% of the 140 dry dog foods in our list. You will pour less of it than you might expect.
To show how much the food matters: a 40 lb spayed or neutered dog needs about 985 kcal a day. That is 2 ½ cups of this food, but 1 ⅞ cups of Purina Pro Plan All Ages Sport Performance 30/20 Salmon & Rice and 3 ⅝ cups of Kirkland Signature Healthy Weight Chicken and Vegetable. Same dog, same day, very different scoops.
A level 8 oz measuring cup holds about 114 g of this kibble. If you have kitchen scales, weighing is more accurate than scooping, because a heaped cup holds noticeably more than a level one.
Diamond Naturals Adult Dog Lamb Meal & Rice feeding chart
Daily amounts for healthy adult dogs with no treats, from the label calories and the AAHA 2021 energy factors. Split the amount into meals.
| Weight | Couch dog | Spayed or neutered | Very active |
|---|---|---|---|
| 5 lb 2.3 kg | ⅜ cup44 g | ½ cup58 g | ⅝ cup73 g |
| 10 lb 4.5 kg | ⅝ cup74 g | ⅞ cup98 g | 1 ⅛ cups123 g |
| 15 lb 6.8 kg | ⅞ cup100 g | 1 ⅛ cups133 g | 1 ½ cups166 g |
| 20 lb 9.1 kg | 1 ⅛ cups124 g | 1 ½ cups165 g | 1 ⅞ cups206 g |
| 30 lb 13.6 kg | 1 ½ cups168 g | 2 cups224 g | 2 ½ cups279 g |
| 40 lb 18.1 kg | 1 ⅞ cups208 g | 2 ½ cups277 g | 3 cups347 g |
| 50 lb 22.7 kg | 2 ⅛ cups246 g | 2 ⅞ cups328 g | 3 ⅝ cups410 g |
| 60 lb 27.2 kg | 2 ½ cups282 g | 3 ¼ cups376 g | 4 ⅛ cups470 g |
| 70 lb 31.8 kg | 2 ¾ cups317 g | 3 ¾ cups422 g | 4 ⅝ cups528 g |
| 80 lb 36.3 kg | 3 ⅛ cups350 g | 4 ⅛ cups466 g | 5 ⅛ cups583 g |
| 90 lb 40.8 kg | 3 ⅜ cups382 g | 4 ½ cups510 g | 5 ⅝ cups637 g |
| 100 lb 45.4 kg | 3 ⅝ cups414 g | 4 ⅞ cups551 g | 6 ⅛ cups689 g |
Label values: 403 kcal per cup, 3,550 kcal per kg. Source: diamondpet.com, checked 18 Oct 2026.
Questions
How much Diamond Naturals Adult Dog Lamb Meal & Rice should I feed a 50 lb dog?
About 2 ⅞ cups or 328 g a day for a spayed or neutered dog, before treats. That is 1,164 kcal a day divided by the food’s label value. Use the calculator above to adjust for your pet.
How many calories are in Diamond Naturals Adult Dog Lamb Meal & Rice?
The label states 403 kcal per cup, 3,550 kcal per kg (checked 18 Oct 2026). Recipes change, so check your bag.
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