I don't know if this qualifies or not cuz their both not chi's. But, I've got a chi and a golden retreiver and I think two are better (at least for the chi). They are alone all day cuz we both work full time, and I've had no problems. I think they keep each other company. They're kept separated by a gate but can still see each other. I only separate them because of the extreme size difference. But, there is no whining or crying, when it's time Taco knows and goes to lay in his bed.