I've owned 3 g.pigs in my life which were a pleasure but i dont know a huge amount about them i must admit. My o/h said he would like 2 indoor g.pigs but i just want some advice really on the size of accomodation that they need? I was given a cage which used to house a ferret in, it has 4 levels in it with ramps. Would this be okay? Any advice would be much appreciated! ta.