Welfare science on commercial dog breeding operations (puppy mills), examining the evidence for systemic suffering, reform efforts, consumer choice strategies, and the case for stronger regulation.
Commercial puppy mill operations represent large-scale, institutionalized animal welfare failure — systems where dogs spend their entire breeding lives in barren wire cages, without adequate socialization, veterinary care, or human bonding. The welfare consequences are documented in peer-reviewed research: puppy mill dogs show behavioral abnormalities from socialization deprivation that persist into adulthood and affect both the dogs' welfare and their suitability as companions. Consumer purchasing decisions directly fund these operations — buying a puppy from a pet shop or online retailer without verifying source often supports puppy mill production. Legislative reform requiring humane standards or restricting commercial puppy sales through third-party retailers is the most effective systemic intervention.