The Book of Household Management by Mrs. Beeton

condition, must very early have attached it to man for motives less selfish than either its fleece or its flesh; for it has been proved beyond a doubt that, obtuse as we generally regard it, it is susceptible of a high degree of domesticity, obedience, and affection. In many parts of Europe, where the flocks are guided by the shepherd's voice alone, it is no unusual thing for a sheep to quit the herd when called by its name, and follow the keeper like a dog. In the mountains of Scotland, when a flock is invaded by a savage dog, the rams have been known to form the herd into a circle, and placing themselves on the outside line, keep the enemy at bay, or charging on him in a troop, have despatched him with their horns.