hey i just got a 2 month old golden retriever puppy 5 days ago and he is quite noisy. He crys often when left alone which is understandable but the most frustrating thing is him barking at us. It happens most often when i return from a walk or when one of us approaches him than he gets excited and barks at us. He just gets sometimes this bout of energy and starts barking at us or sometimes if hes trying to do something we dont allow he barks at us. i really dont want this to continue. what should i do?