Jaxx is gorgeous, and sounds like a perfect companion - except to the guinea pigs! How do they react when he gets on the cage? Do they freak out or are they used to it by now?
They don't appear to react to it, but I'm sure its stressful for them. Best solution so far has been a thick blanket on top of the cages so when they do finally sneak up there they cant see the over sized mice. They haven't tried to break in yet, but I'm sure if opportunity presented itself...