hi, my little girl who is 2 has picked up this naughty trick. i also have a 4 month old son. my dd will kiss him and be nice and all of a sudden its like she cant help adding a little nip. i cant look away for a second when she is near him at the moment. she does love him.... most of the time. we give her heaps of attention and as she is a daddy's girl dh is very careful about giving ds too much attention when she is around. have i a baby vampire?