In Toronto, Canada, the nation's largest city, the municipal council votes unanimously to ban pet stores from selling cats and dogs from puppy mills, allowing only approved sources that include legitimate shelters, registered rescue groups, and the Humane Society.

http://www.petside.com/article/toronto-regulates-dog-and-cat-sales-pet-shops
http://toronto.ctv.ca/servlet/an/local/CTVNews/20110921/council-votes-ban-puppy-mill-pet-shops-110921/20110921
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