Doing so will stop the demand for puppy mill puppies and dogs, thus doing great harm to this shameful segment of the pet industry.
Pet shop owners can, instead, partner with shelters and rescue groups to offer pets for adoption instead of selling pets from mills and shoddy breeders.
https://www.change.org/petitions/ask-mayor-bloomberg-to-step-up-for-dogs-stop-selling-pups-in-stores-other-cities-have-already