What does a piggy say?

I think that by this point Ayden knew all his animal sounds, but Sophie won't slow down long enough for me to teach them to her. Last night, before bed, Ayden and I were working on it with her and she thought that the "piggy" sound was a riot. We just had to make a video! (I know the picture is scary. When I take out her hair before bed it's a crazy mess.)