The names that are also breeds, and the empty field that found four impostors
Setting the name catalogue against the breed catalogue turned up fourteen overlaps. Four of them were not names at all — they were breeds typed into the name box — and one empty field is what separated them from the ten that stay.
Set the name catalogue against the breed catalogue and the overlaps fall out immediately. Some are obvious once you see them — Savannah is a cat breed and a girl's name, Billy is a French hound and one of the most used dog names here. Others were never names in any ordinary sense: nobody calls a dog Havanese. The useful part is that the catalogue could tell those two groups apart without anybody deciding which was which, using a field that was simply empty on one of them.
What the test found
Four words came out of it that were breeds rather than names: Havanese, Doxie, Pomeranian and Schnauzer, holding several hundred registrations between them. They are no longer in this catalogue. They were rejected rather than deleted — the rows keep their counts and their sources so the import can still be reconciled against the published register — but they no longer appear as names anywhere on this site.
Ten overlaps remain, and six of them carry a recorded sex: Billy, Savannah, Bambino, Somali, Pumi and Whippet. Those are names people chose, whose breed meaning is a piece of trivia.
Why the empty field is the tell
Sex is not guessed on this site. It is read from how real animals of that name were actually sexed in the registers, so a name carries male or female because enough animals answering to it were recorded one way. A word that reached the name field because somebody typed the breed there has no such record behind it — the animals exist, but nothing tied a sex to that word as a name.
All four of the rejected words had an empty sex field, and all four arrived from the same two registers. Against a catalogue where about twenty-eight names in a hundred have no recorded sex, four out of four is not a coincidence — and it is a test anybody can repeat, rather than an editor deciding that Havanese looks wrong.
The registration counts say the same. The six overlaps that carry a sex average more than ten times the registrations of the four that do not, which is what you would expect if one group is names chosen repeatedly and the other is an occasional slip of the pen in a form.
The four that stay, and why
Four of the remaining overlaps have no recorded sex either: Brittany, Chantilly, Bombay and Chinook. They stay, and the reason is the rule rather than the evidence. Each is an ordinary word — a French region, a lace, a city, a wind — that a person could plausibly give an animal, and a missing sex on thirty registrations is thin. Where the evidence does not separate a label from a name, the name stays. A catalogue that deleted rows because they looked wrong would be making a judgement it could not show you.
Where this test stops, and what a second one found
The test matches a whole breed name or the last word of a two-word one, which means it cannot see the first word. French and Golden are invisible to it, and both were sitting in the catalogue: French with a few hundred registrations, Golden with rather fewer, each the head of a breed rather than a name. A separate scan for the same signature found them, and both have been rejected.
French is the clearest case in the whole catalogue, and it is worth saying why, because the reason is not that it looks wrong. A name with its number of registrations appears in about ten of the source registers on average, and only one in a hundred appears in fewer than three. French appears in exactly two — the same two that leaked the others — and carries no sex where names of that size almost always do. Two independent anomalies pointing the same way is a finding; either one alone would not be.
Which is also why four more breed words are still here. Lab, Chin, Hound and Chow are breed words with no recorded sex, and by description they look identical to the six that went. They stay because at their size the evidence does not exist: a missing sex is the norm rather than the exception below about thirty registrations, absent on more than four names in ten there, against one in a hundred higher up. The empty field is only evidence where a sex would otherwise almost certainly be. Below that line a word stays whatever it looks like, and looking wrong has never been the standard here.
The wider set, where the overlap is a coincidence
Widen the test to names matching the last word of a two-word breed and twenty-nine more appear, holding several thousand registrations between them. This set is mostly coincidence rather than contamination: Blue is the single biggest of them and is a genuine and popular name that happens to end Blue Heeler and Russian Blue. So are Rex, Laika and Chocolate.
What to take from it
If you like Savannah or Billy, the overlap costs you nothing — they are ordinary names with hundreds of animals behind them, and the breed meaning is trivia rather than a warning. And if a name on any list looks less like a name and more like a label, the sex field is the quick check: a name people have been using for years will have been sexed by the registers long before it reached a site like this one.
Are there pet names that are also breed names?
Ten in this catalogue match a breed name exactly — Billy, Savannah, Bambino, Somali, Pumi, Whippet, Brittany, Chantilly, Bombay and Chinook. Twenty-nine more match the last word of a two-word breed, of which Blue is much the biggest.
Is Savannah a cat breed or a name?
Both, and here it is genuinely a name: it carries a recorded sex and hundreds of registrations, which is what a name people choose looks like in a register. The breed meaning is trivia rather than a reason to avoid it.
Why was Havanese removed from this catalogue?
Because it was a breed typed into the name box rather than a name, and the empty sex field said so — no animal was ever recorded as being called it. Havanese, Doxie, Pomeranian and Schnauzer went on that evidence, and French and Golden on a second scan that catches the first word of a two-word breed. The rows keep their counts so the import can still be reconciled; they simply no longer appear as names.
Why are Lab, Chin, Hound and Chow still listed as names?
Because at their size the evidence that removed the others does not exist. A missing sex is an outlier on a well registered name — absent on one name in a hundred above ninety registrations — but it is the norm below about thirty, absent on more than four in ten. They look identical to the rejected words and cannot be told apart from a real name on any measure, so they stay.
How does this site decide a pet name's gender?
It is measured, not guessed: read from how real animals of that name were sexed in the licence and shelter registers. That is why a word that arrived as a breed label has no sex against it, and why an empty sex field is evidence rather than a gap.
Is Blue a breed name?
Not on its own. It is the last word of Blue Heeler and Russian Blue, and it is also the single most registered name in this overlapping set — a genuine, popular name that happens to end a couple of breed names. The coincidence tells you nothing about the name.