yeah i only have one. she's been on and off antibiotics for upper respiratory (see my intro thread) so ive been hesitant to adopt a friend for her. the cage is small, not really sure what it is, but she has her own room in the house so basically we just leave the cage open and she uses it as a bed and a litter box. a potty trained rat. i never knew, lol. i'll need a new cage for if i get her a buddy anyway though, so if someone could give me a name of some good cages (or point me to the correct thread), that'd be great.