We hear the words, “My dog is protective of me and I think that is why he/she is aggressive.” Or some variation of this, a lot at Off Leash K9. Here is what most people simply don’t understand… most of these dogs aren’t actually aggressive. They are worried! That’s right… worried.
Related Article: Aggression in Dogs: Causes and Solutions

Now, this is not to say that this behavior could not yield a bite because it absolutely could! It is both dangerous and unfair to allow your dog to act in such a way under a misguided notion that he/she is “protecting” you. It is dangerous to other people or dogs who could easily become victims to your dog’s insecurity if he/she ever feels pushed far enough to bite. This is a bad situation, all the way around.
The best “protection” dogs in the world are well socialized, confident and self-assured. You will never see a true protection dog who lacks confidence. A dog needs lots and lots of positive social experiences, appropriate training and a high confidence level before he can pick out a truly threatening person from someone who is just “different” than what he/she is used to. To a dog who lacks confidence, everyone is viewed as a potential threat because each new person is equally terrifying.
So, if your dog is growling and barking at people he/she does not know and does not feel comfortable with, it’s more than likely, NOT because they are protecting you… he/she is telling you they need your help! How do you help? The largest remedy is knowing how to build confidence in a healthy manner while showing your dog a more optimistic view of the world. The second part is gaining the trust of your dog and protecting him/her from the things he/she feels insecure about. You can seek out a reputable trainer in your area to help you with these things in order to build a more successful relationship with your dog while helping your dog handle the world in a healthier manner.