Puppy (large breed) Feeding Guide: Protein, Calories and Key Nutrients
Puppy (large breed) (2–18 months): protein 24–28%, key lever is controlled calcium 1.1–1.3%. What changes and what to watch.

| Stage | Puppy (large breed) |
|---|---|
| Age range | 2–18 months |
| Protein need | 24–28% |
| Key nutrient | Controlled calcium 1.1–1.3% |
A large-breed puppy should look slightly lean, never roly-poly. Calcium above 1.5% doubles the risk of developmental joint disease — this is the single most documented diet-disease link in dogs.
Stage at a glance
| Parameter | Target |
|---|---|
| Stage | Puppy (large breed) |
| Age range | 2–18 months |
| Protein need | 24–28% |
| Key nutrient lever | Controlled calcium 1.1–1.3% |
These targets assume a complete feed meeting AAFCO for the named stage. A senior formula without a published protein percentage is not a senior formula — it is marketing.
What actually changes at this stage
Energy density moves first, everything else follows. Cup counts swing 30-50% across stages for the same dog, which is why bag charts print ranges so wide they are almost useless.
- Re-weigh the dog monthly; the scale settles stage questions faster than any chart.
- Transition formulas over 7-10 days — stage switches are the most common transition people rush.
- Treats scale with the stage too: a puppy training week can quietly double the calorie budget.
Common mistakes at puppy
Feeding by the bag chart instead of body condition, staying on puppy food too long (or too briefly for large breeds), and cutting protein in seniors. All three are fixable today.
Feed to the body condition you can see and feel, with 24%+ protein as the floor for this stage.
Frequently asked questions
When should I switch out of this stage?
Can I stay on this stage's food forever?
Does senior food really matter?
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