Hi and welcome to the forum, I'm sorry to hear it is in such sad circumstances. Was your remaining piggy with his brother when he passed? Often, being given the chance to acknowledge the death is a boost to the mourning process. Ultimately, nothing can replace a cagemate of his own species and I would personally suggest looking through our rescue locator to see if any are local to you that can offer boar dating. If your piggy is able to pick his own friend you are much more likely to end up with a stable companionship. How quick you do this would be led by your piggy and you. Some piggies go into acute grief and stop eating at which point it becomes urgent to find them a friend. Last time I was left with a solo piggy I was very lucky that Daisy didn't go into that level though after a few weeks it became evident that she was feeling very lonely as from the second I got home from work she became very vocal and didn't stop