An Australian shepherd is 20-23 inches at the shoulder, on average. Females tend to be smaller at around 18-21 inches.
A one-month-old Australian shepherd will weigh 3-5lbs. By the time it reaches adulthood, it will weigh 50-65lbs.
The Australian shepherd is a medium-sized breed with a powerful, athletic build. It’s incredibly agile and can respond quickly to change direction and speed when needed.