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
Purina ONE +Plus Healthy Puppy Classic Ground Lamb & Long Grain Rice Entrée sits in the middle of the 18 wet dog foods we track, at 1,173 kcal per kg.
To show how much the food matters: a 15 lb puppy needs about 590 kcal a day. That is 1 ¼ × 13 oz can of this food, but 5 ½ × 3 oz can of Purina Beneful IncrediBites Small Breed Loaf with Real Chicken and 2 ¾ × 9.5 oz carton of Purina Beneful Freshly Prepared Stews Chicken Dinner with Carrots and Rice in Gravy. Same dog, same day, very different bowls.
Wet food is mostly water. Gram for gram, the average dry dog food in our list has about 3.1 times the calories of this one, which is why the wet portion looks so much bigger.
Puppies need about three times their resting energy until 4 months, then about twice. Weigh weekly, because the portion changes as they grow.
Purina ONE +Plus Healthy Puppy Classic Ground Lamb & Long Grain Rice Entrée feeding chart
Daily amounts for growing puppys with no treats, from the label calories and the AAHA 2021 energy factors. Split the amount into meals.
| Weight | Under 4 months | 4 months and older |
|---|---|---|
| 2 lb 0.9 kg | ½ × 13 oz can166 g | ¼ × 13 oz can111 g |
| 5 lb 2.3 kg | 1 × 13 oz can331 g | ½ × 13 oz can221 g |
| 10 lb 4.5 kg | 1 ½ × 13 oz can556 g | 1 × 13 oz can371 g |
| 15 lb 6.8 kg | 2 × 13 oz can754 g | 1 ¼ × 13 oz can503 g |
| 20 lb 9.1 kg | 2 ½ × 13 oz can936 g | 1 ¾ × 13 oz can624 g |
| 30 lb 13.6 kg | 3 ½ × 13 oz can1,268 g | 2 ¼ × 13 oz can846 g |
| 40 lb 18.1 kg | 4 ¼ × 13 oz can1,574 g | 2 ¾ × 13 oz can1,049 g |
| 50 lb 22.7 kg | 5 × 13 oz can1,861 g | 3 ¼ × 13 oz can1,240 g |
| 60 lb 27.2 kg | 5 ¾ × 13 oz can2,133 g | 3 ¾ × 13 oz can1,422 g |
Label values: 1,173 kcal per kg, 432 kcal per 13 oz can. Source: purina.com, checked 18 Oct 2026.
Questions
How much Purina ONE +Plus Healthy Puppy Classic Ground Lamb & Long Grain Rice Entrée should I feed a 20 lb puppy?
About 1 ¾ × 13 oz can or 624 g a day for a puppy aged 4 months or more, before treats. That is 732 kcal a day divided by the food’s label value. Use the calculator above to adjust for your pet.
How many calories are in Purina ONE +Plus Healthy Puppy Classic Ground Lamb & Long Grain Rice Entrée?
The label states 1,173 kcal per kg, 432 kcal per 13 oz can (checked 18 Oct 2026). Recipes change, so check your bag.
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