Sounds like my son
He's the same age and he's full on as well. Constantly moving, bashing things, poking things, into things....yells when I leave the room, the whole bit.
It's been a rude shock because my daughter was the most placid, contented baby - you'd put her down and she'd stay there. Never worried when I left her etc.
DS is the total opposite.
I've pretty much chalked it up to being a boy thing as well.