For example, toy poodles can be subject to eye and skin diseases that are not found in Cocker Spaniels, while Cockers have some eye disorders of their own not found in poodles. However, all that DNA testing can do is show the likelihood that a dog is the offspring of two particular dogs. It is not in any way a test of genetic health. Even if people don't want a show dog, they deserve to get a happy, healthy pet. Breeders who take the steps mentioned above are more likely to produce such a pet.
Puppy mills are bad for many reasons.
However the standards are very minimal. Several Continental Kennel Club breeders advertise as being USDA-registered. No federal regulations exist for kennels that sell directly to buyers. In general, however, it is wise to be suspicious of any kennels housing many breeds, for all of the reasons mentioned above. The advertisements that she mentions are all from Continental Kennel Club advertisers.