I don't know why he is like this.

Who else has a baby that fights? My boy slaps and bites people when he gets the slightest mad and sometimes for no reason. You pick him up and he just starts slapping you or when you show him attention and start kissing him and hug him. If you don't give him attention, he starts crying. He wants to be held all the time which we don't mind. But He was never like this and it's getting worse. He's only 11 months. Will he grow out this you think? He's my first so I don't know.