UpdatedTue, May 11, 2021 at 9:01 am CT Reply The Humane Society of the United States included one puppy mill from Texas in its annual “Horrible Hundred” report of often-filthy, unhealthy conditions endured by dogs and their puppies at high-volume breeding operations. (Shutterstock) TEXAS — The Humane Society of the United States called out 100 problem puppy mills and puppy brokers in its annual "Horrible Hundred" list of problem breeders in Texas and elsewhere across America. The report, released every May, details the often-filthy, unhealthy conditions dogs and their offspring are kept in at high-volume breeding operations that sell puppies to pet stores or through their own websites — which means the puppies could end up anywhere.