So I have two girls and I know they are suppose to play fight to show dominance and what not. And from what I've read when they draw blood thats bad. However, I came home today and I noticed on Rogue's ear, the outside top of it, theres some skin missing and its red. (kinda like how we would get a hang nail ish that type of looking). Do I need to be concerned? They are currently on my bed playing and not fighting so I know Rogue isn't afraid of Storm. Also, its not tooo often when I hear loud loud squeaks and when I do I tell them Stop! and they normally do. Thank youuuu!!