It's interesting that you mention that Ankh. Take the Persian cat and Siamese cat for example. They are both radically different from what they once were, and so you could say they have been eradicated, except they do still exist.
As for the Siamese cat, this is a very good article on their history:
http://www.oldstylesiamese.com/history.htmlThere is a perception of the Siamese as an oriental breed of slenderness and length. That likely is rooted in the fact, that around 1900, the cats that had been exported from Thailand, or that area, to Britain and bred there, were producing two distinct body types: what we call the old style, and the longer, more sleek form.
It appears that this pattern of producing two body types continued over the years, with no real intention to produce one or the other, until after WWII.
Then in 1966, I believe the CFA standard changed, or started to shift towards the lithe body and wedge head.
I know that even in 1974, when a friend of mine bred very nice show Siamese,her cats were not the extremes of today. But the "modern" Siamese, is not a deliberate creation of any group of breeders. It is a look that existed more than a hundred years ago, and which has been refined, to what the breed councils have determined to be the ideal cat.
There are still traditional, or "apple head" Siamese that are bred and registered in CFA, because the two body types do still exist. But of course,the larger cats do not fit the standard for show.
The origins of the Persian cat are more obscure. It's theorized that they were first brought back to Europe, mainly Britain, from somewhere in Asia,during the Crusades of the 1700s.
However, others believe that the Persian's origins lie in the Gobi cat,which came from Northeastern China. They base their beliefs on the fact that the Chinese also bred pug nosed dogs, and had a preference for that feature.
So the shortened face did exist, hundreds of years ago, but like the Siamese body type, it was produced on a random basis, according to the cats being bred. And while it was shorter, it was nowhere near the extreme of today.
It's said that the first Persians were bred with Italian Angoras, and then when the Turkish/Persia cats were brought into the gene pool, the body became cobbier, the head wider, etc.
Over time, the Persian cat produced some shorter faced specimens. At some point in the last century, some breeders became enamored of the look, and when it turned up in litters, they bred back to the type, to produce the
extreme look of today. I believe they started showing in the 1970s.
I don't believe you will ever see the doll face, and the extreme Persian, shown in the same association, simply because they are the same breed, and vary in description, only in the placement of the nose and break. That is
too little to define a breed, and since you cannot define a single breed in two different ways, those who favor the extreme, have managed to change the standard by the sheer numbers in which they have been bred and registered
over the years.
Interestingly, I believe GCCF and possibly FIFe, do not permit the extreme Persian. You would have to check their standards, but I am positive they are not allowed in Britain.
Germany is one of the countries now banning "deformed" breeds, including the
Scottish Fold. The Fold is a natural mutation, the result of which is folded ears. But the gene also carries the possibility of bone spurs and other skeletal problems. It does not mean people should stop breeding them.
It means they must be extremely selective about what they breed, and eliminate all cats known to produce the faults. The German decision was
based largely on a single study done in Australia, where the Folds were all
inter-related, from a small gene pool, which intensified the number of problems in their cats. At present, Folds can outcross to Exotics and I think British Shorthairs. Eventually the studbooks will close, when the gene pool is considered large enough. But this is an example of a natural mutation that does not necessarily have health problems, which are perfectly fine to breed.
(Germany has also banned all blue-eyed white cats, in the belief that they are all deaf, which is not true.)
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Sea hags have feelings too. Honest!!!