I have three cats now princess 8 romeo 7 and rebl 7 month. Now princess and rebel sort off get on, but my male romeo still hisses alot at the little one the little one just lies down to him. Now i dont know,if they should still be like this 7 months on. As soon as they get up it starts, he will not let the little one by him even if you pick up romeo and carry him and the little one follows he hisses. Is this normal? Thanks in advance