Bostons eating habits

Question
   About a month back, I had purchased a boston and was forced to return him because he refused to eat any food, constantly slept, had loose stool, vomiting and never wanted to play.  Vets tested him for every disease possible and wasn't able to find a medical reason why he wasn't eating or playing.  We were forced to give him back.
   Three days ago, we purchased a 8 week old boston from a different breeder.  Since we brought her home she constantly wants to play, has solid stool, no vomiting, however, eats much less than I would expect a growing puppy to eat.  I believe that I am just being overly paranoid because of my first boston experience. Is it normal for boston's not to eat their dog food often.  She will eat treats and "Lammies" (lambs lung) but we are having trouble getting her to eat dog food (wet or dry). Yesterday she ate in the morning but hasn't eaten since.  Plus, she has slept most of today.  Could this be because of stress or seperation anxiety? Please help with any suggestions.  Thank You.  

Answer
HelloShawn and thank you for yuor questions,

I am sorry to hear about your trubles with the first puppy but from what your saying it sounded like Parvo, i would have really bleached everything in theh house adn throw away the first puppies toys and blankets before bringing the new one in...hopefully you did do this. Puppes are finicky even thou my boston ate well for her first week and a hal she tired of the food and becamse very picky adn was so tiny and small I has no choice but to try every food I could find the only thing she will eat to this day..she is now five months old is lite auothirty hard food with my other dogs and will scarf down biscuts and canned foods but none of those are great for her...because she wont eat puppy foods( a few kibbles now and then at best) she is growing slowly but is active and healthy overall. Try picking up differen ttype of food canned hard and semi moist if you mix some together he's bound to eat.