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Ethics

Responsible Breeding, Puppy Mills and How to Tell the Difference

Practical, evidence-based guidance for anyone buying from a breeder, and the welfare case behind it.

By Marcus ColeVeterinary review: Dr Elena Marsh10 min readPublished 2026-02-16Updated 2026-08-28

What a responsible breeder does

They health test both parents for breed-relevant conditions and show you the certificates; they raise puppies inside the home; they let you meet the mother with the litter; they ask you difficult questions; and they will take the animal back at any point in its life.

Warning signs

  • Meeting in a car park, at a service station, or at your home rather than theirs
  • The mother is unavailable, 'at the vet', or clearly not the dog in the photos
  • Several breeds or several litters available at once
  • Puppies offered under eight weeks old
  • No health testing documentation, only a claim that the line is healthy
  • Payment pressure, deposits before viewing, or delivery offered

Conformation and welfare

Some inherited body shapes cause lifelong suffering: severely flattened faces impair breathing, extreme skin folds cause chronic infection, and very long backs on short legs predispose to spinal disease. Choosing breeders who select for moderation drives improvement faster than any campaign.

Facts, expert opinion and advocacy

It is a documented fact that brachycephalic obstructive airway syndrome is more common in dogs with shorter muzzles. It is expert opinion that breeding standards should be revised to require more open airways. It is advocacy to argue that certain breeds should not be bred at all. Readers deserve to see which is which.

References

  1. Packer et al., Impact of facial conformation on canine healthPLOS ONE, 2015