DS1(10), for some reason is petrified of the puppy(11 weeks). He sits with his feet up ont eh chairs and screeches if the pup so much as looks at him. We think it's becasue pup is still at the jumping up wanting to play stage. Today DS1 was sitting at the talbe having breakfast, with his feet up on teh chair and pup was barking at him - in a playful not aggressive way. DS1 was almost hysterical. Then DS2 tried to get into living room, followed by pup and DS1 was behind the door holding it shut, not letting him in, then when DS2 finally got in, DS1 slammed the door shut behind him, hitting p[up on the face and causing him to yelp.
I am worried that as pup gets older we might have "alpha" male problems with pup and DS1, and hte pup will grow into the more dominant between hima nd DS1.
DS2(8) isn't bothered, eh plays with pup, picks him up etc