The Coolie is extremely active and intelligent with a naturally strong herding instinct. The Coolie is renowned for its biddable and friendly nature and it's easy-going, fun-loving personality makes the breed a great choice for a lively family or active individual. Coolies are responsive to commands, easy to train, loyal to their owner and accepting of other pets and children.

Not much is known about the history of the breed although there are theories.

Research indicates that the breed is a derivative from early herding breeds from the United Kingdom such as the Scotch Collie (rough collie) though some believe that the German Coolie is a member of the Border Collie family and known throughout the British Isles as the Blue Merle and that these dogs can still be found today in Wales, Scotland and England. No trace of the German Coolie can be found in Germany.