Oops glad to see you are not in labour! ds2 loves dinosaurs too but not to the point he can identify them by name!!! He just goes "rooooaar" or something which is the same thing a lion or a tiger say. I'd fall over backwards if he pointed & said diplodocus!! He will mimic you saying anything though which is funny, you can say anything, a full sentence, and he'll garble it back to you, it's really sweet.
I always shared a bedroom with my sister - not enough bedrooms for everyone to have their own! Even when we lived in a flat together we shared a bedroom. We were 5 children, such luxuries as personal space didn't exist. But I think the privacy / own space thing doesn't really kick in till the teens, does it? In fact I have never had my own bedroom, really, when I think about it...
ds1 has a high sleeper thing and it's a pain in the backside imho. He loves it, I can't get up there to change the sheets etc, plus I never notice, as it's over my head, that he is stewing in a sort of soup of books and socks and football magazines and the cat etc.
I did smile at rowrowlittlestar v sweet.