I have 2 guinea pigs and adore them. They are funny little critters, easy to contain in a room and not worry about them squeezing into the tiniest places and they make the best noises!! The only thing is I wish they could be litter trained *sigh* I've also had hamsters and mice and while I enjoyed them both (especially the mice!) I doubt I'd have anything except guinea pigs...if anything at all, but you never know.