Golden Retrievers had shown aggression to hunt, to defend themselves from other creatures, to defend resources such as food, a place to sleep, and a mate. Golden Retriever ... Aggressive behavior can begin with some Golden retriever dogs when they are as youthful as five or six weeks old! read more
Aggressiveness in golden retrievers can triggered by the fear of another dog, or unfamiliar situations, can most times be stopped by diverting his attention to something else, but whatever you use as incentive, do not reward him for his aggressive behavior. read more
Aggressive Golden Retriever Dog : rare but it can happen. It is rare for a Golden Retriever dog to turn out to be aggressive, but it can happen. There are many causes for this type of behavioral issues. read more
It sounds like she is reactive to other dogs getting your attention. If you have someone that will help you out you can work on this. You need to have her sit and honor the other dog retrieving its ball and bringing back to you. I wouldnt think that it isnt something that you can not work through. read more