We had a pair of bonded boys for my 2 eldest children, so far so good. Then we got another pair of boys when my youngest child started to protest about his lack of a pet. We kept the pairs in runs next to each other for a few months until they seemed to be all their time up against the wire that was separating them. Also strangely the more dominant one of the older pair started driving his friend out of the house and making him sleep outside (obviously I provided another house at this point so the poor little thing wasn't out in the cold!) and I decided to let all four of them try being together. There was the inevitable bit of running about and nipping but they seemed to settle pretty well. They were in a 12 foot run with 3 different houses to choose from so however grumpy the dominant one was to the others (he wouldnt let anyone share a house with him) there was always a place to snuggle up and they tended to end up with three all piled up in one house and the grumpy one having a house to himself. Then last night I found the one who had originally been chased out had died. There was no blood or fur pulled out, he looked quite peaceful, so I dont think there had been a big fight, I think he must have had some undetected illness that finally caught up with him but now I have a problem: The remaining three are getting on very well, they are frequently to be seen with all 3 little heads in one feed bowl, but my son whose piggie died is desperate for a new furry friend. I cant provide more space, so I dont want to buy another pair to bring my total up to five, but how likely is a group of three who has just has a reasonable amount of upheaval to accept a new arrival? Also I am loathe to aquire a little one just as we head into winter as my piggies live out. They have insulated houses, a polycarbonate roof to their run and heat pads when it gets really cold but is that enough for a youngster who might get cold more easily?