I'm fairly new to Mumsnet but you lot are so wise and full of advice......my dd is 12 months and has recently started hitting out at my ds(3 yrs), when she's not getting her own way, for example when she tries to take a toy away from him and he hangs on to it. She's also tried to bite him a few times. She's obviously already at that cross and frustrated stage (don't think my ds got there until at least 18 months!) Anyone got any ideas on best ways of handling this, other than saying 'no' and removing her from the scene?