6months old with aggressive intentions

Question
I own a half lab half german shepherd. She is 6 months and very trainable. Very laid back personality, but if a child approaches and even if Zoey knows them, she can have a tendacy to grawl and can even snap at them. She is very calm and collective during a situation like this but out of no where she will be aggressive. I can read it in her eyes... "I don't like." What do I do about this? There are lots of children in my neighborhood, and I do not want to be responsible for a bite to a kid. Please help!!

Answer
I am glad you recognize that it is a problem and want to take steps to fix it.  It may not be easy.  Children tend to be fast moving, shrill, loud things that upset dogs not exposed to them early, before 12 weeks.  Depending on how food motivated she is, having children offer her treats may help.  Other steps will require more cooperation from the children.  Make sure they never pat the top of their head.  Even many adults do it, and dogs don't like it.  Try to get them to quietly rub her at the base of the tail.  If she decides to offer them he belly to rum, encourage them.  If she sees that some children can be quiet and gentle and give her the right sort of attention, she maybe more accepting of others.  This won't happen in a week.  Keep at it.