yorkies over bond sometimes . she needs to know your top dog then your son then her as at the mo she thinks shes before your son. when she growls at your son put her on floor and dont talk to her dont even look at her and sit with your son, after a few mins if shes stopped growling make a fuss of her pick her up then every time after that that she growls put her down and do the same she will soon learn that mummy takes more notice of her when shes nice
