You can also try Cheerio's as a treat. My little guy loves them and they are not too heavy, so they will not feel too full. Here is the link for grading your dog food:
http://www.yorkietalk.com/forums/yor...ing-chart.html
It will give you a good idea of what is a good brand dog food to feed. I use Blue Buffalo lamb and rice puppy food, and have been very pleased. Hope this helps!