Yep sounds like the older pup needs to teach the younger one how to behave. That is all. If the Golden has just done warning barks that should mean just that. Giving your pup a warning that he is annoying him. I would let the older dog teach your pup some "manners" as I guess it is said. Just be there to watch it and intervene if it ends up being more then just a quick putting the pup in his place and starts being a full out fight. This is probably going to end up being good experience for both of the dogs.
