how do you know when they are playing and when they are not getting a long. Troy is the smaller of the 2 and at first she would let Walker rough her up. now she is the aggressor and goes after him. but i can't tell when they are playing or not. cause they don't really make noises when they are playing, they kind of do that little growl thing. but sometimes it will get loud and i'll separate them. but then they go right back to playing and growling. so how do i know when its play and when someone is pissed?
