my son is 5 nd half years old, he is active child but mostly time I noticed he don't attached with any activity nd game more than 5 to 10 minutes, even in group play.and when he go out side to play ,there he also not play with particular children , he run here nd there . I observed that he want to play those one ,who are playing some one else. he take his toys nd give them others childrens to Play nd make them happy ... his behaviour totaly out of understanding me .and sometimes he scream like animals as he likes lion .. should I consulte to any doctor