This is a link to a website that lists (on the right side of the page) Outlets that have a pet shop licence to enable them to 'buy in' puppies to resell.

Worth bearing in mind before buying a pub that they could/might be from puppy farms. Never buy a pup without viewing its parents first is the most simple way to help combatt this problem.

New Puppy? PuppyAlert : Exposing puppy farms and mills - What you should know about pet shops that sell puppies