I have an 8 month daughter and at the moment, every time I leave the room or put her down, she screams at the top of her lungs, it's so loud, then I pick her up and she'll laugh or smile. Is this normal behaviour at this time or can they start testing you at this age? I have raised my voice a couple of times and she starts crying and looks at me with those puppy dog eyes! That in turn makes me feel so guilty! Any suggestions? Maybe it will just pass when she is more mobile? Thanks!