[Drago]

I'd definitely get one with more levels, though rats wouldn't appear to appreciate it very much, height is actually one of the most important components in choosing a proper enclosure. A double ferret or critter nation cage would work best to house your rats. They can be a bit pricey up front, but will save you so much in the long run, and your rats will definitely love it! Rats are such fun little companions and I'd recommend them for anyone who is willing to put in the work for them!