Mr. Darwin states in his book on "The Variation of Animals and Plants under Domestication," vol. i. p. 47, that "throughout an immense area, namely, the Malayan Archipelago, Siam, Pequan, and Burmah, all the cats have truncated tails about half the proper length, often with a sort of knob at the end." This description tallies somewhat with the appearance of some of the Siamese cats that have been imported, several of which, though they have fairly long and thin tails, and though they are much pointed at the end, often have a break or kink.
In a note Mr. Darwin says, "The Madagascar cat is said to have a twisted tail." (See Desmares, in Encyclop. Nat. Mamm., 1820, p. 233, for some other breeds.) Mr. St. George Mivart also corroborates the statement, so far as the Malay cat is concerned. He says the tail is only half the ordinary length, and often contorted into a sort of knot, so that it cannot be straightened. He further states, "Its contortion is due to deformity of the bones of the tail," and there is a tailless breed of cats in the Crimea. Some of the Manx cats I have examined have precisely the kind of tail here described thin, very short, and twisted, that cannot be straightened. Is it possible that the Manx cat originated from the Malayan? Or rather is it a freak of nature perpetuated by selection? Be this as it may, we have the Manx cat now as a distinct breed, and, when crossed with others, will almost always produce some entirely tailless kittens, if not all. Many of the Siamese kittens bred here have kinks in their tails.
Nenhum comentário:
Postar um comentário