My usually very social and happy baby has become a crumbling mess of tantrums, crying and moaning. She is usually such a sweetheart and everyone comments on her temperament, but just lately she has been acting like she's in the terrible twos and she's only 11 months! Is this a normal developmental phase? She's also very frustrated because she is a lot more active, but not quite walking, so perhaps this is part of the reason. Just wondered if there was anyone else who has gone through this and come out the other side???!!!