I read on another post that a dog will eat something if you spit on it... seriously, that's what I read and the person tried it and it worked...
I don't think a dog will strave either, my Gypsy hardly eats and my Mum's Yorkie eats even less! They both do eat, just not a great deal and slowly pick their way through a bowl. Some days she'll eat a couple of bowls full but mostly she will have one bowl and make it last all day.