Now that Papillon is crawling all over the place, she has realized that she must figure out how to bring her toys with her wherever she goes. Brilliantly, she has discovered that she can easily carry most things in her mouth. It's very efficient of her - she can crawl, chew and move her toys all at the same time.
It's highly entertaining to watch. And in case you were wondering, surprisingly enough, she did not learn this from Marge. Marge hasn't carried toys around like this since she was a little puppy.
Here is some video footage of this new trick.
And yes, that is a fairly standard reaction from Phoebe when Marge walks into the room.