Standing between 17 to 20 inches at the shoulder, the Australian Cattle Dog is a sturdy, hard-muscled herder of strength and agility. The ACD is born with a white coat that turns blue-gray or red. Both coat varieties feature distinctive mottling or specking patterns. ACDs have immense work drive and excel at hunting, chasing, and, of course, moving livestock. Their boundless energy and supple gait make them excellent running partners.ACDs are true-blue...