i got my first piggie just over 2 months ago and he's doing fine and still hasn't yet been introduced to my other three, which I got who'd been together a year and apparently couldn't be separated, haven't been getting on. One (fudge) constantly chases the other two, one much worse than the other. And is constantly trying to get on top of the other, and occasionally he will make a wheek and its so horrible to hear, I'm unsure if he bites him but no blood has been drawn, although his ear looks slightly torn which must have been done before I got them. Has anyone got any advice on how to calm it down, they have a two level cage so have plenty of room, always have chews, toys and hide's. So I haven't a clue why this could be happening. I tried putting one on the other level and blocking it off but he was wheeking and trying to find a way back down to them... Any help and advice will be much appreciated.