Puppy mill breeder dogs resemble shy dogs in many ways but have other strange characteristics.They run from people and will not make eye contact with you.They are very sensitive to noises, startle very easily and flee if given the opportunity.If cornered, most of these dogs will not bite.Instead, they completely shut down.Some will flatten out on the floor and shut their eyes tightly; others look as if they are in a trance.
Puppy mill dogs have never lived in a home so they are unfamiliar with walking up and down steps, find hardwood floors and linoleum strange to walk on, and can be frightened by televisions, radio, hair dryers and other household appliances.And the most difficult issue is house training.These dogs have lived in cages all of their lives and are accustomed to sleeping and eating with their own wastes.