1   Texas Heeler- The Australian Shepherd Blue Heeler Mix, also known as Texas Heeler, is a hybrid dog. Its parentage comes from two common Australian breeds, the Australian Shepherd and the Australian Cattle Dog. The latter breed is also more commonly known as the Blue Heeler.  Texas Heelers are a friendly bunch, all while being protective of its family. Aside from its family, it is also quite protective of its turf. The breed is also an intelligent dog that makes for excellent watchdogs, making them easier to train.  Approximate weight between 30 to 60 lbs.  Females are usually smaller.