Okay ....Okay, I now this sounds crazy. 
I was in my kitchen one day and I have a self watering water container for my two dogs. Lab and Yorkie.  I have to keep a towel under the water bowl. (otherwise my lab gets it all over the kitchen) I put Mia's food dish with food in it on the other side of the towel. I left the room. My lab was outside. When I came back I saw the whole dish had been covered with what was left of the towel. So I thought, ok thats weird, So I uncovered it. I watched and Mia walked over and nosed it back over her food. It was the weirdest thing. I wish she could talk and tell me why? She loves her food.  
Does anyone else's yorkies do this?