This doesn't surprise me. Most pet stores get their puppies from puppy mills, even if they don't say it. I've never seen pictures of a happy pleasant puppy mill either. Puppies from puppy mills generally suffer from such things as inbreeding related health issues and also health issues from living in a poor environment. When the breeding dogs (which are usually breed one pregnancy after another) can't breed as quickly, they are often sold at auction. Facilities that do animal testing will often buy dogs at auction so basically the breeding dog is tortured for life.
Best way to get a dog is to go through a rescue/shelter. If people insist on buying a dog, they should visit the breeder. If you can't visit the breeder, then there is an issue.
For more information:
http://stoppuppymills.org/