The Collie came out of Scottish sheep-herding dogs and was refined in Victorian Britain into the elegant dog most Americans know from Lassie. There are two varieties of the one breed: the Rough, with a flowing mane and long outer coat, and the Smooth, with a short, dense, flat coat. Both have a double coat, and adults typically weigh 50 to 75 pounds.
In Killeen, the coat is the part to plan around. Collies shed heavily, especially when they blow their undercoat, so a household that can brush regularly and live with hair on the furniture will be happier. They're sensitive dogs that respond best to gentle, reward-based training, and a Collie left with nothing to do may bark or try to herd the kids. Personalities vary from dog to dog.