As these dogs are bred to work in a variety of environments, their physical appears varies also. Standing from 16 to 24 inches (40 to 60 centimeters) at the shoulder and a little longer than they are tall, Koolies also vary in coat type. The coat may appear short and smooth (similar to Blue Merle Smooth Collies) or medium to long (like Border Collies). The short/smooth coats are low in maintenance. Colouring also varies. The coat may be  solid, "bi" (black and white or red and white), "tri" (solid red or black, with white markings, normally with brown points), "tri merle" (same description but merle), or "merle" (grey, black,red/chocolate or white undercoat with large areas of darker colourings of red/chocolate for red merles or black and grey for blue merles). 

Agile, adaptable, and intelligent, Coolies need early, supportive training and socialization to help them adapt to the specific needs of their owners. They respond quickly and confidently. This is a high drive, hardy, enthusiastic dog who needs a job to do! Coolies excel in sporting activities, service, search and rescue, or as loyal companions. Patient, dedicated, and devoted, Koolies outside the farm or ranch compete in herding, obedience, tracking, jumping,and other dog agility events.