I have a 4 year old Pembroke and a 5 year old granddaughter. The two of them have not socialized very much because Radar barks at her when she comes in the house. That is his job as my companion and watchdog. My granddaughter shows fear which eggs him on. I believe Radar would make up with her if given a chance, but I do not want to chance him nipping at her. Right now I am keeping the two of them separate but would like to work towards them being friends. Rules of the house are no running in the house, no teasing or hitting at the dog...basic common sense rules.