Cats
way into the West although it has existed for decades in Japan and a similar breed known as
the Mekong Bobtail (formerly the Thai Bobtail) is known in Russia. Mekong Bobtails also
occur naturally among feral cats in Malaysia and Thailand.
In others the prefix "Si" is used e.g. the Si-Rex is a colourpointed Rex and is further
identified as Cornish Si-Rex or Devon Si-Rex. It exists unofficially or experimentally in a
few breeds e.g. Si-Manx (Manxamese). In the American "Cats Magazine" of June 1965 there
was a photo of two Blue-Point rex-coated kittens born to a blue self (Cornish) Rex in August
1964. Their pedigree showed that four generations back, there had been a Blue Point Siamese
outcross in the breeding program. In addition, one ancestor was an Oregon Rex mutation
owned by Mrs Mildred Stringham of Warrenton, Oregon. A Si-Rex was being developed in