There are several cat breeds that always produce blue or gray fur, of whom the adjective may be used. These are the Russian Blue, the Chartreux and the Korat, none of which are associated with Malta. There are several other breeds that often produce blues such as the British Shorthair. The blue variant of this breed was so common that some thought it was its own breed called the "British Blue".
Regardless of breed, any cat with solid gray coloration has two pairs of double-recessive genes for the non-agouti and color-dilution traits, and so an exclusive mating between two solid gray cats should always produce solid gray kittens.
In literature, "The Maltese Cat" is the title of a short story by Rudyard Kipling. The story is about a polo match set in British colonial India, told from the point of view of one of the ponies, a gray named the Maltese Cat.
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