How Big Do Australian Shepherds Get?
How big do Australian Shepherds get? Most Australian Shepherds grow to a medium-sized dog, but their exact size can vary based on gender, genetics, and overall health.
Understanding their full size helps you prepare for space, exercise, and long-term care.
Average Size of Australian Shepherds
Adult Australian Shepherds typically fall within these ranges:
- Males: 20–23 inches tall, 50–65 pounds
- Females: 18–21 inches tall, 40–55 pounds
They are considered a medium-sized breed with an athletic build.
When Do Australian Shepherds Stop Growing?
Most Australian Shepherds reach their full height by around 10–12 months.
However, they may continue to fill out and gain muscle until they are about 18–24 months old.
This is especially true for active dogs with strong genetics.
What Affects Their Size?
Several factors influence how big your Australian Shepherd will get:
- Genetics from the parents
- Nutrition during growth stages
- Exercise and overall health
Feeding a balanced diet is important for proper development. If you need guidance, see our guide to the best food for Australian Shepherds.
Are Australian Shepherds Good for Small Spaces?
Even though they are medium-sized, Australian Shepherds have high energy levels.
They can live in smaller spaces, but only if their exercise needs are fully met.
If you are unsure what that looks like, read Australian Shepherd exercise needs.
Size vs. Energy Level
Size is only part of the equation.
Australian Shepherds are working dogs, which means their energy level is often more important than their physical size.
They need daily structure, activity, and engagement to stay balanced.
Final Thoughts
Australian Shepherds are medium-sized dogs with strong, athletic builds.
While their size is manageable for most homes, their energy and intelligence require commitment.
If you meet their needs, they are one of the most rewarding breeds to own.
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