Puppy farming involves intensive breeding of dogs in poor conditions, producing puppies with health and behavioral problems that cause suffering across their lifetimes.
Puppy farming subjects breeding dogs to conditions comparable to intensive livestock farming — continuous reproduction in barren environments with no exercise, socialization or veterinary care. The puppies produced are poorly socialized, often carrying infectious diseases and genetic defects from inbreeding, and develop behavioral problems that persist for life and frequently lead to premature surrender or euthanasia. Lucy Law 2020 banned third-party puppy sales in England, but online sales have partially circumvented this. Buyer education — always seeing the mother, visiting the home environment, never buying sight-unseen — is the most effective consumer-level intervention.