Puppy feeding charts / Terrier group
Puppy growth · Terrier group
Irish Terrier puppy feeding chart
A Irish Terrier grows to about 27 lb. Puppy calories track the puppy's current weight, not its adult weight: 4 lb of puppy under four months needs about 328 kcal a day, and the daily total keeps rising until adult weight, when the factor drops and the dog needs 733 kcal — fewer calories than it did at 11 lb as a growing puppy (467 kcal).
- 1Under 4 months 4 lb · 328 kcal
- 2Most calories 23 lb · 813 kcal
- 3Adult 27 lb · 733 kcal
Chart: calories and cups as the puppy grows
Weigh the puppy, find the nearest row, feed that amount split into three or four meals under four months and two or three after. Re-weigh every two weeks. Cups use 369 kcal/cup (Purina Pro Plan Complete Essentials Shredded Blend Chicken & Rice (adult dry)); puppy foods are often denser, so use the kcal/cup on your bag — the sizer accepts it.
| Share of adult weight | Puppy weighs | Stage | Factor | kcal/day | Cups at 369 | Grams |
|---|---|---|---|---|---|---|
| 15% | 4 lb (1.8 kg) | Puppy, under 4 months | × 3 | 328 | 1 | 96 g |
| 25% | 7 lb (3.2 kg) | Puppy, under 4 months | × 3 | 500 | 1¼ | 120 g |
| 40% | 11 lb (5.0 kg) | Puppy, 4 months to adult | × 2 | 467 | 1¼ | 120 g |
| 55% | 15 lb (6.8 kg) | Puppy, 4 months to adult | × 2 | 590 | 1½ | 144 g |
| 70% | 19 lb (8.6 kg) | Puppy, 4 months to adult | × 2 | 704 | 2 | 192 g |
| 85% | 23 lb (10.4 kg) | Puppy, 4 months to adult | × 2 | 813 | 2¼ | 216 g |
| 100% | 27 lb (12.2 kg) | Adult, neutered | × 1.6 | 733 | 2 | 192 g |
RER = 70 × kg0.75; puppy and adult factors from the Merck Veterinary Manual. The age split (four months) is Merck's; the weight shares are evenly spaced points for reading the curve, not growth milestones for this breed. Calorie density: Purina. Checked 2026-10-20.
Where the stages fall for a Irish Terrier
The 3× factor applies while the puppy is under four months, which for a Irish Terrier usually means the rows up to roughly a quarter or a third of adult weight — around 4–7 lb. Between four months and maturity the factor is 2×, covering the 11–23 lb rows. Medium breeds like this one typically reach adult weight around a year, when the factor drops to the adult 1.6× and the daily amount falls even though the dog is at its biggest.
The peak of the chart is the surprise for most owners: at 11 lb and 2× RER the puppy eats 467 kcal, but the same dog at its full 27 lb as a neutered adult needs only 733 kcal. Watch for the hand-off and reduce the ration rather than letting the adult food amount "catch up".
Growth to watch in a Irish Terrier
The standard puts an adult Irish Terrier at 18 in at the withers, so a puppy at the 15 lb row — a little over half its adult weight — is typically most of the way to full height and still filling out. Because females of the breed finish around 25 lb rather than 27 lb, a female puppy's rows stop short: read the chart to about 21 lb before switching to the adult factor. The gap between the 23 lb puppy row (813 kcal) and the adult row (733 kcal) is the amount to cut at the switch.
Crate divider positions
The same growth rows are a guide for the divider in the adult-size crate. A Irish Terrier ends up in a 30 in crate — see the Irish Terrier crate size page — and the divider should give the puppy only enough room to stand, turn around and lie flat at each stage, moving back roughly every re-weigh.
Compare with similar breeds
A Cocker Spaniel puppy at 12 lb (40% of its 30 lb adult weight) needs 499 kcal; A Pembroke Welsh Corgi puppy at 12 lb (40% of its 31 lb adult weight) needs 499 kcal; A Miniature Bull Terrier puppy at 14 lb (40% of its 35 lb adult weight) needs 560 kcal.
Adult weight from AKC breed standard (PDF), checked 2026-10-21. Maintenance figures for a healthy puppy; your vet's growth-curve advice comes first.