My little girl is 14 months old and has turned into a complete monster!! She has become quite aggressive and makes growling noises when she doesn't get what she wants ( she isn't saying any words yet), she has also started to attack me, ie, pulls my hair, bites me, hits me .... this can be at any time, even when I try to love her, the most embarrasing thing was today, my sister put her arms out to love her and my baby slapped her round the face!!! My little girl never sees anyone being aggressive, i do not slap her - why has she become so aggressive?! She is also very very willful, if she wants something then she is determined to get it, ie, she will touch the plug socket i will tell her no, move her away and she will go back to it over and over again, i never let her get her own way but it feels like a constant battle!!!