We recently got a catahoula leopard puppy who is 3 months old. Every time the ferret is awake the puppy chases her and bites on her. Sometimes she pulls the ferret by her, tale other times she bites her neck and the ferret hisses. We don't know what to do to make the puppy stop bitting her. I am worried one day she will bite to hard, and injure the ferret.