West Highland White Terrier puppy growth: milestones and weight estimates
How fast a West Highland White Terrier puppy grows, illustrative weight estimates and the limits of predicting adult size.
Westie puppies are compact and grow steadily, reaching adult height at about 9 to 10 months and adult weight by around a year. Coat changes come in stages: the soft puppy coat starts giving way to harsher adult hair from about 5 to 6 months, and a groomer can help it come through correctly.
Watch the jaw area between about 3 and 8 months. The breed is known for a bone growth condition of the lower jaw that can make chewing painful. A puppy that suddenly drools, refuses hard food, or cries when opening its mouth should be seen by a vet promptly.
West Highland White Terrier puppy growth in numbers
Illustrative size-based model for a male West Highland White Terrier, in kg, by age in months
| Age | Female | Male |
|---|---|---|
| 2 months | 2.3 kg | 2.5 kg |
| 3 months | 3.4 kg | 3.8 kg |
| 4 months | 4.3 kg | 4.9 kg |
| 5 months | 5.3 kg | 5.9 kg |
| 6 months | 6 kg | 6.8 kg |
| 7 months | 6.5 kg | 7.3 kg |
| 8 months | 6.9 kg | 7.8 kg |
| 9 months | 7.1 kg | 8 kg |
| 10 months | 7.3 kg | 8.2 kg |
| 12 months | 7.5 kg | 8.5 kg |
This is an editorial model scaled to a typical adult weight, not an observed breed average, a validated growth standard or a healthy-weight range. Do not adjust food to make a puppy follow this line. Discuss actual growth measurements with your vet.