The McNab Dog, also called the McNab Shepherd or McNab Collie is a herding dog that originated in Hopland, Mendocino County, Northern California. The McNab was bred to withstand the tough conditions found in California such as heat, burrs, foxtails, and rugged terrain. Until recently, the McNab was little known outside California, but in last three decades have seen a gain in popularity and geographic dispersal of the breed. The appearance of the McNab can vary considerably. The dog is medium-sized with females standing 16–21 inches at the shoulder and weighing 30–50 pounds and males standing 18–25 inches at the shoulder and weighing 35–65 pounds. The dogs have a variety of ear sets from pricked ears to floppy ears and everything in between. Tails are either short (bobbed naturally or mechanically) or long. McNabs come in colors of black, red, blonde, blue, lilac and sable with variations of solid, added white or added white and tan (tri colored). (Source: Wikipedia.org, CC BY-SA)