Sealyham Terrier weight by age
Typical weight by age for a Sealyham Terrier with an adult weight of about 24 lb (male) or 21 lb (female). The range shows where most puppies fall.
| Age | Male | Female |
|---|---|---|
| 2 months | 5.6 lbrange 3.8–7.7 lb | 5.2 lbrange 3.6–7.2 lb |
| 3 months | 8.6 lbrange 6.1–11 lb | 8.0 lbrange 5.7–10 lb |
| 4 months | 12 lbrange 9.0–15 lb | 11 lbrange 8.3–14 lb |
| 5 months | 15 lbrange 12–18 lb | 14 lbrange 11–16 lb |
| 6 months | 17 lbrange 14–20 lb | 15 lbrange 12–18 lb |
| 8 months | 20 lbrange 17–23 lb | 18 lbrange 15–21 lb |
| 10 months | 21 lbrange 18–24 lb | 19 lbrange 16–22 lb |
| 12 months | 22 lbrange 19–24 lb | 20 lbrange 17–22 lb |
Divide pounds by 2.2 for kilograms.
Adult weight
AKC breed page: 23-24 pounds (male), slightly less (females). The source gives no number for females, only that they are slightly smaller, so we use 90% of the male weight. The calculator uses about 24 lb for males and 21 lb for females as the typical adult weight.
Common questions
How much should a Sealyham Terrier puppy weigh at 3 months?
A typical male Sealyham Terrier weighs about 8.6 lb at 3 months (most between 6.1 and 11 lb). A typical female weighs about 8.0 lb (most between 5.7 and 10 lb).
How much should a Sealyham Terrier puppy weigh at 6 months?
A typical male Sealyham Terrier weighs about 17 lb at 6 months (most between 14 and 20 lb). A typical female weighs about 15 lb (most between 12 and 18 lb).
How much does a Sealyham Terrier weigh at 1 year?
A typical male Sealyham Terrier weighs about 22 lb at 12 months (most between 19 and 24 lb). A typical female weighs about 20 lb (most between 17 and 22 lb).
When does a Sealyham Terrier stop gaining weight?
The typical Sealyham Terrier puppy reaches about 90% of its adult weight around 10 months. The last few percent come on slowly after that. Large and giant breeds fill out for longer than small ones.
How accurate is the Sealyham Terrier weight calculator?
Across our test dogs the typical miss was about 11% of adult weight, smaller for older puppies. Your puppy can land outside the range. See the methods page.
Other breeds
Weight standard: AKC breed page. Growth curves: our analysis of open data from Salt et al. (2017), CC BY 4.0. An estimate, not veterinary advice. Methods.