[littlelizzy]

Mia is 8 months old and weighs 2.5 lbs. She has basically been the same size for months now. I know alot of yorkies are this small and smaller, but her parents are 4 and 5 lbs. Her sister from the same liter weighs 4 lbs already. She is very active and seems healthy for the most part, but she does seem a little to thin to me. When she is wet I can see her spine sticking up a little and you can feel her ribs just a little too. Maybe I am just use to my other 2 yorkies who are fat little piggys.
She eats Canidae dry food and tolerates it very well. But, if she gets one little bite of any human food she will be throwing it up about an hour or two later.
So needless to say, we have cut out all human food. She seems to have trouble tolerating treats as well, even the greenies make her sick. Has anyone else had these types of problems before?
Her low weight gain and sensitive stomach have got me to worrying about liver shunt. Maybe I am just being to paranoid.
Any and all advice would be appreciated.