Australian Shepherd Puppy Weight Calculator & Growth Chart
An agile, medium-sized herding dog with balanced proportions. Australian Shepherds exhibit a classic medium-breed growth curve, finishing near 12–13 months.
Australian Shepherd Weight Calculator
Estimated Adult Weight
Australian Shepherd Pediatric Growth Trajectory
Biological sigmoid curve showing healthy weight progression by age (weeks).
Shaded area represents healthy ±1 standard deviation AKC breed corridor.
Growth Velocity Note
Steepest growth occurs between 8 and 20 weeks, after which athletic agility and coordination refine.
Veterinary Feeding Guidance:
Feed a balanced medium-breed puppy formula with optimal protein to support active muscle tissue without excess fat accumulation.
Australian Shepherd Week-by-Week Weight Milestones
Reference data for healthy Australian Shepherd puppies based on veterinary pediatric percentiles.
| Puppy Age | Expected Weight (lbs) | Expected Weight (kg) | Developmental Milestone |
|---|---|---|---|
| 8 Weeks (2 mo) | 8–12 lbs | 3.6–5.4 kg | Agile juvenile development |
| 12 Weeks (3 mo) | 16–24 lbs | 7.3–10.9 kg | Steady skeletal lengthening |
| 16 Weeks (4 mo) | 24–34 lbs | 10.9–15.4 kg | ~50-55% adult weight |
| 24 Weeks (6 mo) | 34–46 lbs | 15.4–20.9 kg | Agility frame stabilization |
| 36 Weeks (8 mo) | 42–56 lbs | 19.1–25.4 kg | Coat density and chest tuck |
| 52 Weeks (12 mo) | 45–65 lbs | 20.4–29.5 kg | Full adult athletic benchmark |
When Do Australian Shepherd Growth Plates Close?
For the Australian Shepherd (medium breed classification), epiphyseal growth plates typically close between 12–14 months. Until these cartilaginous zones calcify into solid bone, the skeletal structure is particularly vulnerable to impact trauma.
- Avoid repetitive high-impact jumping (such as off tall beds or out of SUVs).
- Postpone intense agility hurdles or forced running on concrete until growth plate fusion is complete.
- Maintain lean body condition: excess puppy fat places unnecessary biomechanical torque on immature ligaments.
Nutrition & Weight Maintenance
Caloric demand peaks between 8 and 16 weeks, during which puppies require up to twice the calories per pound of body weight compared to adult dogs.
Feed a balanced medium-breed puppy formula with optimal protein to support active muscle tissue without excess fat accumulation. Weigh your puppy bi-weekly and adjust portions according to their body condition score (BCS) rather than bag recommendations alone.
Australian Shepherd Weight & Size Questions
How big do Australian Shepherds get?
Standard Australian Shepherd males weigh 50 to 65 lbs (20–23 inches tall). Females weigh 40 to 55 lbs (18–21 inches tall).
When do Australian Shepherds stop growing?
Aussie puppies reach their adult height around 10 to 12 months and fill out into mature athletic weight by 13 to 14 months.