Rat Terrier weight by age
Typical weight by age for a Rat Terrier with an adult weight of about 18 lb (male) or 18 lb (female). The range shows where most puppies fall.
| Age | Male | Female |
|---|---|---|
| 2 months | 4.7 lbrange 3.3–6.3 lb | 4.7 lbrange 3.3–6.3 lb |
| 3 months | 7.0 lbrange 5.1–9.1 lb | 7.0 lbrange 5.1–9.1 lb |
| 4 months | 9.4 lbrange 7.2–12 lb | 9.4 lbrange 7.2–12 lb |
| 5 months | 12 lbrange 9.4–14 lb | 12 lbrange 9.4–14 lb |
| 6 months | 13 lbrange 11–16 lb | 13 lbrange 11–16 lb |
| 8 months | 15 lbrange 13–17 lb | 15 lbrange 13–17 lb |
| 10 months | 16 lbrange 14–18 lb | 16 lbrange 14–18 lb |
| 12 months | 17 lbrange 14–18 lb | 17 lbrange 14–18 lb |
Divide pounds by 2.2 for kilograms.
Adult weight
AKC breed page: 10-25 pounds. The calculator uses about 18 lb for males and 18 lb for females as the typical adult weight.
Common questions
How much should a Rat Terrier puppy weigh at 3 months?
A typical male Rat Terrier weighs about 7.0 lb at 3 months (most between 5.1 and 9.1 lb). A typical female weighs about 7.0 lb (most between 5.1 and 9.1 lb).
How much should a Rat Terrier puppy weigh at 6 months?
A typical male Rat Terrier weighs about 13 lb at 6 months (most between 11 and 16 lb). A typical female weighs about 13 lb (most between 11 and 16 lb).
How much does a Rat Terrier weigh at 1 year?
A typical male Rat Terrier weighs about 17 lb at 12 months (most between 14 and 18 lb). A typical female weighs about 17 lb (most between 14 and 18 lb).
When does a Rat Terrier stop gaining weight?
The typical Rat Terrier puppy reaches about 90% of its adult weight around 9 months and 95% around 12 months. Large and giant breeds fill out for longer than small ones.
How accurate is the Rat 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
- West Highland White Terrier
- Beagle (13-inch)
- Boston Terrier
- Pug
- Cavalier King Charles Spaniel
- Miniature Schnauzer
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.