Hello, I'm looking for some advice. We have recently become the owners of 2 male guinea pigs (brothers from the same litter), they are 10 weeks old. We've had them for 4 days. We came home from work/school yesterday and my 10 year old daughter found one of them dead and is totally devastated. He was feeding fine in the morning and was bright eyed and playful so I'm at a loss as to why this happened. We've taken the other the the vet to get it checked and it seems fine and healthy, although he seems is very quiet. The vet tell what happened to the one who died - said it could have been a heart defect / stroke. I'm now so worried about the remaining boy guinea being lonely and want to know the best way to go about bonding him with a new male companion (and where to get it). I've contacted the breeder we got them from but she hasn't replied yet. My daughter is very worried now about going to feed and take care of the other one as she is terrified that he will also have died, so our pet ownership experience has got off to a challenging start. I did all the research before we bought them, them have a lovely big hutch and run with fresh grass and access to clean water, they have only been fed kale, carrot, cucumber and guinea pig pellets. I just don't know what to do next!