US Humane Society Calls Out Problematic Puppy Mill Inspections In Oklahoma The Humane Society of the United States recently put out its list of the worst puppy mills in the country. Oklahoma is not on the list, but just because Oklahoma didn't make the 'Horrible Hundred,' doesn't mean the state is doing a good job cracking down on illegal puppy mills. In fact, John Goodwin with the Humane Society said it's just the opposite. "The fact is, there are some horrible puppy mills in Oklahoma, and it doesn't look like anybody is doing anything to try to help those dogs," Goodwin said.