Large Dog Weight Chart by Age

This large breed puppy growth chart covers dogs whose adult weight lands between 51 and 90 lb (23–41 kg). Use it when you know roughly how big your puppy will get but not the breed — a mixed breed, or a breed without its own chart here yet. The curve comes from veterinary records of millions of young dogs, grouped by adult size rather than by breed.

Large breed weight chart by age

Large breed puppy growth chart: the weight span for a dog whose adult weight will fall between 51 and 90 lb.
Age Weight range % of adult
2 months 12–21 lb5.5–9.4 kg 23%
3 months 20–34 lb9–15.5 kg 38%
4 months 27–46 lb12.1–21 kg 52%
5 months 33–58 lb14.9–26.2 kg 64%
6 months 38–67 lb17–30.2 kg 74%
8 months 44–79 lb19.9–35.8 kg 87%
10 months 47–84 lb21.2–38.1 kg 93%
12 months 48–85 lb21.6–38.6 kg 94%
18 months 49–89 lb22.4–40.2 kg 98%
24 months 51–90 lb23–41 kg 100%

Each row spans the whole class, from the lightest large females to the heaviest males. If you know the breed, its own page narrows this considerably.

How large breeds compare

Every large breed on the site, side by side. Ranges cover both sexes; each breed page splits them.
Breed 3 months 6 months 12 months Adult
Australian Shepherd 16–25 lb 30–48 lb 38–61 lb 40–65 lb
German Shepherd 20–34 lb 37–66 lb 47–85 lb 50–90 lb
Golden Retriever 21–28 lb 41–55 lb 51–71 lb 55–75 lb
Labrador Retriever 21–30 lb 41–59 lb 51–75 lb 55–80 lb

When to use a breed chart instead

If you know the breed, go to its page. The class chart above has to cover every large breed at once, so its range is wide by necessity; a breed page scales the same curve to that breed’s own adult weight range from the American Kennel Club standard and splits it by sex, which typically halves the range. Use this page when the breed is unknown or mixed, and the breed page when it is not.

Every large breed with a chart on this site is listed below.

Other size classes

Estimate your puppy’s adult weightAll size classes

Growth curves derived from Salt et al. (2017), used under CC BY 4.0. The full table and method are published here.

Australian Shepherd Weight Chart by Age

Australian Shepherd weight chart by month. Males reach 50.0–65.0 lb (22.7–29.5 kg), females 39.9–54.9 lb (18.1–24.9 kg). Month-by-month healthy ranges from 8 weeks.

Golden Retriever Weight Chart by Age

Golden Retriever weight chart by month. Males reach 65.0–75.0 lb (29.5–34.0 kg), females 54.9–65.0 lb (24.9–29.5 kg). Month-by-month healthy ranges from 8 weeks.

German Shepherd Weight Chart by Age

German Shepherd weight chart by month. Males reach 65.0–89.9 lb (29.5–40.8 kg), females 50.0–70.1 lb (22.7–31.8 kg). Month-by-month healthy ranges from 8 weeks.

Labrador Retriever Weight Chart by Age

Labrador Retriever weight chart by month. Males reach 65.0–80.0 lb (29.5–36.3 kg), females 54.9–70.1 lb (24.9–31.8 kg). Month-by-month healthy ranges from 8 weeks.

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