Avi's started grabbing things and pulling them to her mouth! (Yes, that last sentence deserves an exclamation punctuating it.) It is so weird, to see my 4.5 month daughter, carry her own toy to the car when we leave the house. It is truly amazing.
I love this expression: it's the one she gets right before she's about to chomp down on a toy. She attacks it with a vengeance - as if it is about to jump out of her hands.