I have a question for you. Bijou is 18+ lbs and Mika is around 9 lbs. They can be found curled together sleeping but at other times Bijou chases her and can seem to be very rough with her which concerns me. She is more timid than he is and sometimes it seems as though he picks on her. Is this their way of "playing" or showing dominance and should I be concerned? When he starts getting what I consider to be too rough I generally put a stop to it but when we are at work who knows what happens.