The Australian Kelpie is a lean, prick-eared herding dog developed in Australia in the 1870s from Scottish working collies to move sheep across hot, open country. Adults typically weigh 25 to 45 pounds and stand 17 to 20 inches tall, with a short, weather-resistant double coat that sheds moderately.
Kelpies are quick, alert and loyal, and many stay reserved with strangers. The same drive that made them great stock dogs can turn into heel nipping, barking or chewing when they're bored. That makes daily exercise and training the main thing to plan around, and working-line Kelpies usually have more drive than show-line dogs, though every Kelpie varies.