I have a brother-sister combo, Lhasa Apso's. They will be three years old in September. It has worked out wonderfully. I would advocate always getting two at once from a litter if possible. They have bonded with my family with no trouble and are wonderful playmates with each other. The smaller of the two, Otis, the boy, is the more agressive but Gracie has learned not to back down if something means enough to her. Having always been together they seem to watch out for each other as well. Would do it again in a heart beat.