My niece is moving in next month. She really wants to get a pet rat. Problem is I already have 2 cats. I just have a really bad feeling about this. Nothing may happen but still even the best pet owners can make mistakes,and I am afraid if I accidently left the rat cage open or if my niece wanted to play with the rat that the cats would try to kill it. I don’t want this to happen my niece has had enough tragedy and trauma in her life. Anyone have any suggestions as to how I can gently approach her about this, and voice my very real concerns?