Kaji did this when I started working. It was his "you don't love me anymore" routine. It could be your baby just missed you and thinks he did something to deserve "abandonment." He gets over it for a while then starts all over again. He'll shake and make himself look real pitiful so I can comfort him and not leave. It worked for a while but I learned it's all an act. Just another thing that proves these little ones are smarter than we give them credit for!
