About four months ago, Roxie, one of my beloved little furballs died under really difficult circumstances. I was left with Bones, a male sable, and the first ferret I've ever had, and so therefore a very dear little guy. Recently, a friend of mine moved into a situation where she couldn't bring her ferrets. She asked me to take Otto, one of her cinnamon males. Bones is a little over three years old and Otto is right around two. They seemed to get along pretty well at first, though I noticed they were playing a lot more roughly with each other than I was used to with just Roxie (a female) and Bones. Recently I've noticed that Otto has been biting Bones harder and more roughly than I'm comfortable with. Bones has bite marks on his neck, and occasionally, I've had to step in and separate them when Otto has bit into Bones' neck and started dragging him. Bones doesn't seem to be emotionally different now than before - he's still playful and has a healthy diet, and he doesn't seem afraid of Otto at all, but I'm still concerned that Otto is just a bit too rough with Bones. Are my concerns founded, or is it pretty much natural with males to fight this roughly? If not, what can I do to make Otto take it easy on Bones? How concerned should I be about the bite marks? Any help would be appreciated. [Posted in FML issue 2328]