Submissions from 2017
The Horrible Hundred 2017: A Sampling of Problem Puppy Mills and Puppy Dealers in the United States, The Humane Society of the United States
Submissions from 2016
The Horrible Hundred 2016: A Sampling of Problem Puppy Mills in the United States, The Humane Society of the United States
Submissions from 2015
The Horrible Hundred 2015: A Sampling of Problem Puppy Mills in the United States, The Humane Society of the United States
Submissions from 2014
101 Puppy Mills: A Sampling of Problem Puppy Mills in the United States, The Humane Society of the United States
Estimate of USDA Licensed Breeders 2014, The Humane Society of the United States
Submissions from 2013
A Horrible Hundred 2013: Problem Puppy Mills in the United States, The Humane Society of the United States
Environmental Impacts of Puppy Mills, The Humane Society of the United States
Fact Sheet on Puppy Mills and Flea Markets, The Humane Society of the United States
Investigation: Many Maryland Pet Stores Found in Violation of Puppy Mill Disclosure Law, The Humane Society of the United States
Puppy Mill Brokers, The Humane Society of the United States
Puppy Mill Closure: The Economic Impact on a Local Community, The Humane Society of the United States
Texas Puppy Seller Investigation, The Humane Society of the United States
Submissions from 2012
Puppy Buyer Complaints: A Five-Year Summary, 2007‐2011, The Humane Society of the United States
The American Kennel Club: No Longer “The Dog's Champion?”, The Humane Society of the United States
The HSUS Investigates: Chicagoland Pet Stores, The Humane Society of the United States
The Problem of Unlicensed Puppy Mills, The Humane Society of the United States
Veterinary Problems in Puppy Mill Dogs, The Humane Society of the United States
Submissions from 2011
HSUS Investigates: New York Puppy Stores, The Humane Society of the United States
Update Report: Missouri’s Dirty Dozen, The Humane Society of the United States
Submissions from 2010
Facts About Cage Stacking, The Humane Society of the United States
Missouri’s Dirty Dozen: A Report on Some of the Worst Puppy Mills in Missouri, The Humane Society of the United States
Problems with Grid Flooring in Dog Kennels, The Humane Society of the United States
