DS (2.5) has always got upset when DD (1.5) starts crying. Up until now it normally results in him crying as well and we have a cacophany to deal with. He has just realised though that he is now 2 and should be having tantrums, throwing himself on the floor, thrashing about etc. If DD now cries he will lash out at her, and if he gets to her, she cries more, he lashes out...etc etc... I wonder if anyone has any tips for dealing with this ? I am worried he is going to hurt DD if I can't get to her in time, plus I worry about him and why he is actually doing it. Anyone have any similar experience ?