I would reconsider wanting to fatten her up at all. Lean dogs (as long as we aren't talking very underweight) tend to be healthier than heavy dogs. An extra pound on a Yorkie is about 1/7 their weight. That would be like us being 1/7 overweight. As long as the vet is happy, I wouldn't worry.
__________________ Crystal  , Ellie May (RIP)  , Rylee Finnegan  , and Gracie Boo🐶 |