History
The Australian Kelpie was originally bred to have the energy, intelligence, and independence to herd livestock all day in the hot Australian climate without much need for supervision, and the breed retains those qualities to this day. Australian Kelpies are still used across Australia and the United States for their herding instincts, and that suits these dogs just fine, as they are happiest when they have a job to do.
Size
Australian Kelpies are medium-sized dogs, typically weighing between 25 and 46 pounds. They usually measure 15 to 20 inches at the shoulder. Individuals of the breed may be smaller or larger.