Australian Shepherd Growth Chart
Australian Shepherds are agile herding dogs with a lean, athletic build. Males are typically heavier than females. Growth may pause during high activity phases, so trend several weekly weights instead of relying on one reading.
Australian Shepherd weight by age
Typical weight ranges based on Australian Shepherd adult size and standard growth curves. Individual puppies may vary.
| Age | Expected weight (low–high) |
|---|---|
| 8 weeks | 6.2–18.5 lb |
| 12 weeks | 9.4–23.7 lb |
| 16 weeks | 12.2–28.2 lb |
| 20 weeks | 14.8–32.4 lb |
| 24 weeks | 17.2–36.4 lb |
| 32 weeks | 21.8–43.9 lb |
| 40 weeks | 26.2–51 lb |
| 1 year | 32.3–61 lb |
| 1y 26w | 36.7–65 lb |
Australian Shepherd Growth Stages
Understanding the typical growth stages helps you know what to expect as your Australian Shepherd puppy grows.
Neonatal
0–2 weeksPuppies are born with eyes and ears closed, relying entirely on their mother. Rapid weight gain occurs during this period.
Socialization
3–12 weeksEyes and ears open. Puppies begin to explore, play, and learn social behaviors. This is a critical period for development.
Juvenile
3–6 monthsRapid growth continues. Puppies become more independent, start teething, and develop coordination.
Adolescent
6–12 monthsGrowth rate begins to slow. Puppies reach sexual maturity and may test boundaries. Muscle mass develops.
Young Adult
12–15 monthsGrowth is nearly complete. Your puppy is filling out and approaching adult proportions.
Adult
15+ monthsYour puppy has reached their full adult size. Weight should remain relatively stable with proper nutrition.
Calculate Your Australian Shepherd Puppy's Adult Weight
Enter your Australian Shepherd puppy's age and current weight for an estimated adult weight range.
Enter your puppy's details to see the estimate
Australian Shepherd FAQ
How much will my Australian Shepherd puppy weigh as an adult?
A fully grown Australian Shepherd typically falls between 40 and 65 lb. In this medium breed, males commonly reach 50–65 lb while females often land at 40–55 lb. Use this calculator with your puppy's age and current weight for a personalized estimate within those bounds.
At what age is an Australian Shepherd fully grown?
Australian Shepherds are medium dogs that typically reach most of their adult weight between 12 and 15 months. Aussies may pause weight gains during high-activity adolescent phases. Slight muscle or coat fill may continue briefly after height stabilizes, so weekly weigh-ins give a clearer picture than a single reading.
How accurate is an Australian Shepherd puppy weight chart?
Estimated Australian Shepherd growth curves assume typical development, but working versus companion activity levels create meaningful variation within the breed. High exercise keeps adolescents looking lean on charts. Parent weight and body condition may refine predictions when available. Charts work best alongside sex-specific ranges and consistent measurement habits.