I have a two year golden retriever that is a big sweetheart. I've taken him to dog parks plenty of times and never had a problem, until today. We were just entering the dog park and got rushed but a couple of dogs. Normal right...well there was this one lab mix that was pretty hyper and jump right up on Max and mounted him. Well Max (usually happy go lucky) turned and growled and didn't bite the dog but snapped at him. I have to say the owners were right there and corrected their dog, but a few minutes later their dog went to try it again and its owners corrected their dog. Is this something I should be worried about. I've never had a problem like this before. Does this sound like typical behavior?