My dog is 9 months old. In general she is very well behaved and obedient. The only problem that we have is that she growls at strangers and other dogs. Her hair on her back stands up and everything. At first I thought it was because she was scared but now I'm not so sure. We have a screen porch where she sits and looks out the door. I don't see how she could be scared of someone when she is in an enclosed, protected space. now I think it might be aggression.
She does this at the dog park too. What I don't get is that once the stranger gets close enough for Suki to sniff them, then she licks them to death!