Here in the UK they are called Puppy Farms. There was an investigation a few years ago which highlighted inbred diseases, false vcaccination history and squalid conditions.

Unfortunately people buy from these puppy farms as they purchase a puppy at a cheaper price than normal and often do not report the conditions that the puppies were raised in. And they then wonder why the puppy isn't 100% fit!

Some people will do anything for money!!