My DD is 18-months-old and was always a smiley, easy going baby who loved her little friends, right up until about two months ago. She's fine when she's with adults, but she's started to play up around other children and often swipes at their heads and snatches toys away. At playgroups or during play dates (especially at our house) she gets territorial about her toys and nearly always tries to hit the other babies. I have to watch her like a hawk. It's so embarrassing and I feel like a sh*t parent when the other toddlers are playing nicely and mine is basically being a complete little git. I tell her firmly no, take her away from the situation, distract her with a book etc. But she still does it and it's driving me nuts because I can't stay in the house with her everyday and avoid all other toddlers during what I hope is this awful phase. Has anybody else experienced this?