They test their bounds. They want to dominate each other. They attack each other and want to play.
But this period is also time for being careful. Suddenly they react to noises, that didn’t seem to affect them earlier. Or they refuse to walk in to places, where they used to walk a couple of days ago.
They are five weeks old, and their personalities are being structured.
This is also the time, when you could call them. One day they all come running towards you. The next day they don’t give a damn!
Toilet training also begins now. We have opened the door connecting our kitchen with a small-enclosed yard. It is obvious times to teach them, that this is were they should pee.