Once he get's it into his head that he can get away with anything by looking cute, you'll have a problem and so will he.There'll come a time when he goes too far.When that happens and you get angry with him or shout at him he'll be a very confused and unhappy dog.You have to be firm but kind with him. Say 'no' and mean it. Stop him instantly from doing anything he shouldn't before he does it or continues! If he demands attention all the time, or when you don't want to be pestered, ignore him.Repeat commands until he follows, then act pleased and reward him.Remember that underneath he still has the needs and thinking of his ancestors in the wild: they all have a strict code and social order and he'd be at the bottom of the order ! You are at the top, and he's happiest knowing that you are, just as he would know who is top dog in the pack.