he is the same as my son la. everytime he sees my father-in-law he get very excited for no reasons (eventhough the first time they see each other). temper same as your son, when he cannot reach things he wants or place he wants to go, he will be angry la. this is boy right. :-P take it easy la
my son is the opposite to yours. he is very active and so active that makes everybody exhausted cos we have to follow him all around and even we follow but sometimes he still hurt himself. Lucky you, enjoy the present moment and you will see that he will be more and more active day to day. don't worry la.