“KC registered” is not one thing

Ask most puppy adverts what “KC registered” means and you get the same answer: the dog has papers. But the Royal Kennel Club runs more than one register, they mean very different things, and the difference is explained badly almost everywhere. It is the single most useful thing to understand before you use a stud dog or buy a puppy.

The three answers a Royal Kennel Club record can give

Look a dog up in the Royal Kennel Club’s public records and there is a registration type against it. We pulled real dog records from the live public finder while building this site; the field shows one of three things.

The blunt consequence: a genuine number, a crossbreed dog

The Activity Register exists so that any dog can take part in Royal Kennel Club activities such as agility and flyball. That is a good thing, and the dogs on it are properly recorded. But it is not a pedigree record, and it accepts crossbreeds.

While researching this site we found a dog on the Activity Register whose registered name included the word “Labrador”. It held a real Royal Kennel Club number. It was not recorded as a pedigree Labrador Retriever, because the Activity Register does not do that. “Has a KC number” and “is a pedigree dog” are different claims, and a number quoted in an advert only ever proves the first one.

This is not a scandal and it is not usually deception — most people quoting a number are repeating exactly what they were told. It is simply a distinction the advertising does not make, and the buyer pays for it.

Why the register decides everything at stud

If you are paying a stud fee expecting a pedigree litter, the register is the whole question. The Breed Register is the register on which a dog’s parentage is recorded, and on which both of a dog’s own parents appear. A number from a different register cannot stand in for it.

That is why Breed Right enforces the rule at the level of the database rather than the form: Every stud dog on Breed Right is on the Royal Kennel Club Breed Register. The Royal Kennel Club also runs an Activity Register, which is open to any dog including crossbreeds — those dogs cannot be listed at stud here.

The wrinkle nobody tells you: you cannot look a number up

Here is the finding that surprised us most, and that changes how you should read every advert you see. The Royal Kennel Club does not publish registration numbers anywhere. Not on its public dog records, not in the health datasets it publishes itself, not in the web addresses of those records — which are keyed on an internal identifier instead. There is no public page anywhere where you can type a registration number in and see whose dog it is.

So when an advert quotes a number, there is nothing you can check it against. The only evidence of the number itself is the registration certificate. That has three practical consequences:

• Ask to see the certificate. The original, in person, not a photograph of a photograph. It carries the registered name, the registration number and the register.
• A number in an advert is decoration. It looks like evidence and behaves like none. Treat it as a claim to be checked, not a fact.
• Nobody can look a number up for you — including us. What can be corroborated against the Royal Kennel Club’s public records is the dog: registered name, breed, date of birth, sex and register type. That is exactly what our team checks, by hand, on a stated date.

The Royal Kennel Club publishes no data feed and offers no lookup service to sites like ours, so there is nothing to automate. Instead a named member of our team consults the Royal Kennel Club’s free public Health Test Results Finder, as any member of the public may, and writes down in their own words what they saw and on what date. We keep our own note. We never keep a copy of the Royal Kennel Club’s records, and we have no access to any Royal Kennel Club database.

The other numbers on the paperwork

A Royal Kennel Club registration certificate is not the only piece of paper with a code on it, and several of those codes get quoted in adverts as if they were registration numbers. They are not.

One more register: the Imported Breed Register

Some breeds more recently established in the UK sit on the Royal Kennel Club’s Imported Breed Register — 29 breeds as at 29 September 2026 (the Royal Kennel Club counts the three sizes of Xoloitzcuintle separately), alongside the main register. The list changes: a breed joins it when the Royal Kennel Club first recognises it, and moves to the Breed Register once it is established in the UK. These are pedigree breeds; the register reflects the breed’s status in the UK, not the individual dog’s. Where a breed on Breed Right is on the Imported Breed Register, its breed page says so.

What Breed Right does about all this

The whole reason this site exists is that today, on most directories, nobody checks anything. Our answer is deliberately narrow and deliberately honest:

• Stud dogs are Breed Register only. Enforced in the database, the model layer, the admin queue and the deployment checks — four layers, because a rule that lives in a form is a rule that leaks.
• A person does the checking. A named member of our team compares the breeder’s declaration and certificate against the Royal Kennel Club’s public records, and we record who checked it and when.
• The badge carries its date. “Verified” never appears without one, and it comes off the moment a detail it covered is edited.
• We keep our own note, never their records. We do not hold a copy of any Royal Kennel Club data and have no access to any Royal Kennel Club database.

How verification works sets out exactly what the badge is allowed to claim — and, just as importantly, what it is not.

What to do with this

If you are using a stud dog

Ask which register he is on, in those words, and ask to see the registration certificate. If the answer is vague, or the reply is only a number, that is your answer. Then move on to the health results — our stud dog checklist takes it from there.

If you are buying a puppy

Ask which register the litter will be registered on, and ask to see both parents’ paperwork. A breeder who understands the difference will answer in a sentence. See buying a puppy safely for the rest of the paperwork you should expect.

If you are selling

Say exactly what you have, using the register’s name. “On the Royal Kennel Club Breed Register” is a stronger sentence than “KC reg”, and the buyers who know the difference are the buyers you want.