So where do things stand with dog populations in the U.S.?
Crackdowns on breeding, success with shelter neutering–while good things–could leave future veterinary clients without a source for pet dogs.

It’s been six months since the U.S. Department of Agriculture implemented rules to bring Internet breeders within the scope of its animal welfare standards governing dog breeders. This is the latest initiative by federal and state governments to clamp down on puppy mills. We have also seen more cities join the growing roster of jurisdictions banning the retail sale of dogs.
We also know that euthanasia rates in shelters continue to decline across the country, reflecting the dramatic success of a broad grassroots initiative in every region to expand the number of spays and neuters performed on shelter dogs. It is the rare shelter that is not addressing this issue in some manner. Is the job finished? No, but everyone in the animal welfare world should celebrate the significant gains to date.