Tonight we took our 2 yo GSD and our 14 week old GSD pup to play in the park, Our 2 yo shes more attached to my husband than she is to me, but the pup he is more attached to me than my husband. I was running and playing with BOTH dogs and the pup of course being more attached to me would follow me where ever i went. Well he was right there by my legs everywhere i went and my girl would come up to him and get between me and him then she would kinda growel and then she would bite him, ive seen them play and and ive never seen her act that way towards him before. Everytime without fail she would come between me and him and she didnt like the fact that he was following me. Im not sure what to make of this, is this behavior normal is she showing him who is boss? Do i correct this kind of behavior or do i let them be? Does my girl feel left out?