Hi When my teens started fighting together inar jumped between.Kids were shocked so inar felt he could be their boss.He started warning them when they came near me.I told them to ignore him,dont talk to him and not pet him.When you walk in his direction walk firm trough so he must step aside.When you come down and he jump up lift your knee and step firm further.Within two days inars behaviour was gone without real corrections.I learned with all 3 co that being firm with your bodylanguiage you dont need to give commands.Than i talk just moving in the house ofcourse not talking about training and stuff.Some said let your kids train him but he will feel their insecurity right away so thats not a good option.