British Shorthair Although the British Blue remains the most familiar variant, British Shorthairs have been developed in many other colours and patterns. Black, blue, white, red, cream, silver, golden and—most recently—cinnamon and fawn are accepted by all official standards, either solid or in colourpoint, tabby, shaded and bicolour patterns; the GCCF, FIFe and TICA also accept chocolate and its dilute lilac, disallowed in the CFA standard. All colours and patterns also have tortoiseshell variants. The Tabby patterns include: Classic Tabby, Mackerel Tabby, Spotted & Ticked Tabby. The non-tabby patterns include: Tortoiseshell, Bi-Colour, Van patterns Bi-Colour & White, Smoke, Tipped & Colourpointed. They
Cat body-type mutation Cat body-type mutation Cats, like all living organisms, occasionally have mutations that affect their body type. Sometimes, these cat body-type mutations are striking enough that humans select for and perpetuate them. This is not always in the best interests of the cat, as many of these mutations are harmful; some are even lethal in their homozygous form. This page gives a selection of cat body type mutant alleles and the associated mutations with a brief description. Jb = Japanese bobtail gene (autosomal dominant). Cats homozygous and heterozygous for this gene display shortened and kinked tails. Cats homozygous for the gene