Never house them together! I had 2 girl Piggies.. they loved each other. They Do best with there own Kind. They both have different wants/needs when it comes to a companion. And they tend to get at each other more. ALSO, Rabbits get illnesses that piggies don't normally,and they can make each other sick. Just get another piggie. If you want a rabbit, you will have to house it on it's own.