That is still not working for me. So, how many rats can more than comfortably, do you think, could fit into one of the singles? How about one of the doubles? MAN. I've been looking at rat breeders in Illinois all night. And I CANNOT GET A PAIR OF RATS YET. AND. I don't know enough about them to get any yet. But you keep making me want one!!!! Is it bad that I want rats, but that I do not care what they look like (except the bigger the ears, the better) as long as they are bred to be healthy and have great temperaments??? And I don't even know if I want boys or girls yet. I want to say boys because my boy mice are sweethearts and love me. But I could do without the stinkiness of a male. Yes, my males now STINK when they pee on me. But their cages do not stink.