Okay, Sophie has an older sister who is a Rottweiler/Boxer mix (mostly boxer) She is thick, strong, Muscular, not so smart, but an Alpha Dog if there was ever one. I am nervous having Sophie around her because I know if Pixie steps on her the wrong way even once, she could end up seriously hurt. Am I being overprotective? When they play Pixie likes to stand over Sophie and when she runs she runs over her and kicks her accidentally. My husband thinks I am being paranoid. Am I? I am afraid Sophie will get seriously hurt.