I have been thinking a lot about things. As we know in the wild rats live in big colonies for the most part. It's an important aspect of their survival. I know that when I bring rats in and already have rats in the house they feel more comfortable than when I am ratless. I have been wondering would rats feel more safe in larger groups. I haven't had more than 4 rats in a group at a time and for the past several years I have only had 4-5 rats in our house at a time. I'm strongly considering adding to my colony assuming my application is approved. I would love to hear your opinion on this.