How to Read a Cat Pedigree: 3, 4 and 5-Generation Certificates Explained

A kitten's pedigree is its official family tree and birth certificate rolled into one document. It traces the cat's registered purebred ancestors across usually three, four or five generations, and it is the paper that buyers, registries, show judges and future breeders rely on to understand exactly where a cat comes from.

Yet many new owners — and plenty of new breeders — find a pedigree confusing at first glance. There are titles, abbreviations, colour codes and long registration numbers squeezed into small boxes. This guide walks through every part of a typical certificate, explains what each detail tells you, and shows how to use that information when buying a kitten or planning a litter.

Whether your cat is registered with the GCCF, TICA, CFA, FIFe or another body, the layout is broadly the same, so once you can read one pedigree you can read almost any of them.

What a cat pedigree actually proves

A pedigree proves ancestry. It confirms that the cat's parents, grandparents and earlier ancestors were registered with a recognised registry, and it records what each of those cats was called, what colour they were and, usually, their registration numbers.

What a pedigree does not prove is health or quality on its own. A beautifully printed five-generation certificate tells you nothing about whether the parents were screened for heart disease or kidney problems. That information lives in health records and DNA test results, which a responsible breeder keeps alongside the pedigree — see our guide to health and vaccination records.

It is also worth knowing the difference between a breeder-issued pedigree and a registry-issued one. Many breeders produce their own pedigree from their records when the kitten leaves, while the official registration certificate comes from the registry once the kitten is registered or transferred. Both are useful; the registry document is the formal proof of registration.

The kitten's identification details

At the top of every certificate you will find the details that identify the cat itself:

• Registered name — the full official name, usually starting with the breeder's cattery prefix (for example "Purrline Silver Artemis")
• Breed — sometimes written in full, sometimes as a registry code such as BRI for British Shorthair or MCO for Maine Coon
• Date of birth
• Sex — male or female, and sometimes neuter status
• Coat colour and pattern — for example "blue", "black silver shaded" or "seal lynx point"
• Registration number — the unique number issued by the registry
• Microchip number — increasingly included, normally a 15-digit ISO number

These details identify the cat for life. If you ever need to transfer ownership, enter a show or register a litter, the registry will match these details against its records, so it is important they are spelt and recorded exactly.

Colour codes and EMS codes

Some registries, especially FIFe-affiliated clubs, use EMS codes — a short string that describes breed, colour and pattern. For example "BRI a" is a blue British Shorthair, while "MCO n 22" is a black classic tabby Maine Coon. If you see letters and numbers after the breed, that is almost certainly an EMS code describing the colour and pattern precisely.

The sire and dam

Directly beneath or beside the kitten's details you will find the sire (father) and dam (mother). This is the most important part of the pedigree for most buyers, because the parents have the most direct influence on the kitten's looks, temperament and health.

For each parent you should expect to see their full registered name including any titles, their registration number, and their colour and pattern. Titles appear before the name — CH for Champion, GC for Grand Champion, IMP for Imperial, and so on. A title tells you that cat was shown and assessed against the breed standard by judges.

When buying a kitten, ask to see the health test results for both the sire and dam. A good breeder will happily show DNA results for conditions relevant to the breed, such as PKD, HCM or PRA.

The ancestry tree explained

The main part of the pedigree is a bracket or grid. The sire's family sits on the top half and the dam's family on the bottom half. Each column moves one generation further back:

• 3 generations: parents, grandparents and great-grandparents — 14 named ancestors
• 4 generations: adds the great-great-grandparents — 30 named ancestors
• 5 generations: adds one more generation — 62 named ancestors

Every ancestor box should show the cat's name with titles, its colour and pattern and, where known, its registration number. Colour is particularly important because it lets breeders predict which colours a pairing can produce. If you want to explore what a mating could give you, try our free cat colour genetics calculator.

Spotting repeated ancestors

As you read across the tree, look for names that appear more than once. A cat that appears on both the sire's and the dam's side is a shared ancestor, and shared ancestors raise the inbreeding coefficient of the kitten. A few repeats far back are normal in most pedigree breeds; many repeats close to the kitten are a warning sign. Our full guide to the inbreeding coefficient explains how to measure this properly.

Breeder and owner details

The pedigree names the breeder who produced the litter — usually with their cattery name — and the registered owner. When a kitten is sold the new owner is added on transfer of registration, which the breeder normally arranges with the registry once any contract conditions are met.

If the breeder and owner details are missing, ask why. Buyers should always know who bred their cat, and the breeder's name is what other breeders will recognise when they look at the cat's background in future.

Registration status: active or non-active

One of the most important lines on a modern pedigree is registration status:

• Active registration means the cat may be bred from and its kittens can be registered with that registry. Active cats can also usually be shown in all classes.
• Non-active (pet-only) registration means the cat is registered, but any offspring cannot be registered. Non-active cats can often still be shown in neuter classes once neutered.

Most pet kittens are sold on non-active registration, with a kitten sales contract that sets out neutering requirements and the terms of sale. Breeding rights are normally only granted to experienced breeders, often for a higher price and with extra contract clauses. Read our kitten sales contract guide for what to include.

3, 4 or 5 generations: which is best?

Three generations is the minimum most buyers expect and is enough to see the parents, grandparents and great-grandparents. Four and five-generation pedigrees give a much clearer picture of the wider bloodline, and they are essential if you plan to breed, because they reveal shared ancestors that a short pedigree would hide.

For pet buyers, any of the three is fine as long as the details are accurate. For breeders, five generations should be the standard — both for assessing a new cat and for calculating inbreeding before a mating.

Common mistakes on pedigrees

Even experienced breeders make errors when pedigrees are typed out by hand. Watch out for:

• Misspelt names that do not match the registry record
• Missing or swapped registration numbers
• Colours recorded with old or incorrect terms
• Sire and dam sides accidentally reversed
• Titles missing, or titles added that the cat never earned

These errors matter because they get copied into every future kitten's pedigree. The safest approach is to record each cat once, accurately, and generate pedigrees from those records rather than retyping them every time.

Making pedigrees without retyping

Purrline Pedigrees builds brandable 3, 4 and 5-generation pedigrees from the sires and dams you have already linked in your account. Every ancestor box shows titles, name, colour, pattern and registration number, and the kitten's certificate includes registration status, breeder and owner.

If you already have paper certificates, you can photograph them with the photo-to-pedigree scanner and every ancestor is filled in for you to check. Pedigrees then flow straight into each kitten's printable kitten pack. Before planning a mating, check the inbreeding coefficient of the pairing.

Key takeaways

• A pedigree proves ancestry, not health — always ask for health tests too
• Check the kitten's registered name, colour, registration number and microchip carefully
• Look at the sire and dam first, then read back through the tree for repeated ancestors
• Active registration allows breeding; non-active is pet-only
• Breeders should work with five-generation pedigrees as standard

Ready to produce accurate, branded pedigrees in seconds? Start a 7-day free trial of Purrline Pedigrees.