My yorkie Lewie, before you could feel his spine, he was just not a big eater, but one month I could tell his spine was a little more prominent than usual, the vet set his weight was normal, but I went ahead and tried to get him fatter.
I was recommended to used Orijen puppy food. He is doing really good now and much healthier and stockier. He's about a year 3/4ths
