We have had Zoey for 8 weeks. She is 21 weeks now. She is our first GSD and we are all in love with her. She is fantastic with us and our children (2 boys 8 & 6). However, whenever she sees any other children she barks and growls at them. Considering she is so affectionate with our two children, we are confused when she acts this way with other children. She greets adults with some concern but settles quickly. But children are not as well received. Is this common at this age and is there anything we can do to help with this? Knowing she is going to bark and growl at children, I can't really call my friends and ask them to bring their kids by so my dog can growl at them. She is in obedience class and the trainer doesn't seem concerned by it when I ask. However, she said her GSD has never liked children and she doesn't have children so it is okay. Yet, we have children and will likely have friends children over at times. So we need to work through it, not accept it. Any suggestions/advice would be greatly appreciated.