The Australian Shepherd took shape on ranches in the American West during the 1800s, from Spanish and Basque-type herding dogs crossed with collie types that arrived with sheep shipped from Australia. Ranchers prized its stamina and quick thinking, and rodeo performances in the mid-1900s made it famous. Aussies are medium-sized, usually 40 to 65 pounds, with a weather-resistant double coat in merle, black or red, often with white and copper trim and blue or mixed eyes.
Many Aussies are intelligent, loyal and happiest with a job to do. They bond closely with family and may be reserved with strangers. In Pueblo, that means a dog that enjoys long outings and training games but may herd children, bark at passersby or chew when bored. Dogs vary, so a dog's own history and energy matter more than the breed label.