I just got two 8 week old kittens from the humane society, and I already have 3 rats. I was wondering what the best way to introduce them would be. I don't want them to attack each other, and I'm also fearful that if the kittens want to play they may injure the rats accidently. I've heard of many instances where rats and cats get along together really well and I was just wondering if anyone had any recommendations.