Some babies like to chew on pacifiers; Emma likes to chew on her own cheeks. It's a habit she cultivated a couple of months ago and it's still going strong. Most often she makes a sort of fish face, like in the first picture. At first I thought it was kind of weird, then cute, and now I love it, because it is how she calms herself down when going to sleep. Such a bizarre habit, and who knows how she learned to do it, but it sure is fun to see the faces she makes!