He is a 10 year old daucshand/cockerspaniel mix and I adopted him this past May. He is super sweet and loving when it is just us and never aggressive. Also when I take him to the dog park he will only be aggressive for like 4 minutes and then will get a long with other dogs for the rest of the time. He is this way towards my friends/family/&strangers. 5 min of being protective and then all is right in the world. I read your article on this, do you have any suggestions as to what is going on&how I should react based on my personal case. I just dont want people to keep giving me the eye rolls!