When we went for Gidget's first vet visit he asked how often I was feeding her and at the time we had just got her and left dry out for her all day. He said that he has never encountered a fat Yorkie and that they arnt prone to being overweight since they are so active......Now that we have changed food Gidget is eating alot more and still is not pudgy or anything.....I think as long as they are active they sould be fine