So, Day One dawned and it was clear they've been having altercations - there was stuff everywhere and Boris had clearly been bitten on the nose. Watching them, it seems that Boris is definitely going for Top Pig status and just wants to hump Frisbee all the time whereas Fris just wants to hide in his tunnel cos he's terrified of everything. I think Fris probably had enough of Boris's persistence and lashed out.
Lots of 'behaviour' happening this morning and then about mid morning I heard really angry squeaking and saw them launch themselves at each other. I rushed in and picked Boris up with a towel. I managed to wedge a strong piece of cardboard into the cage so they had half each, plus a hidey, a pile of hay some grass, dandelions and carrots each so they could both calm down. I rang the rescue centre and Joanne was very reassuring, said I'd done all the right things and that this could be a difficult bonding because they're both teenagers (4 and 5 months) but to take the divider out after ten minutes and keep an eye on them.
Took the divider out and Boris immediately went to find Frisbee, who really wasn't in the mood and after a bit Boris went and sulked in his hidey - possibly Fris had gone for his sore nose again.
It's all very quiet in there now, both in their hideys.
It's been quite distressing to witness all this, and there's probably plenty more to come, but it's great to be able to share it and find out so much on this forum.